# Deep Time Walk: Earth History — Walk Earth's 4.6 billion years > Immersive walking audio history of Earth's 4.6 billion years. (iPhone/iPad app by Deep Time Walk C.I.C..) - Source: https://appshunter.io/ios/app/deep-time-walk-earth-history/id1163814608 (this page in markdown: same URL + `.md`) - Developer: [Deep Time Walk C.I.C.](https://appshunter.io/developer/1163814607) - Category: Education, Reference - Price: Free - Rating: 4.50/5 from 33 App Store ratings · 25 written reviews indexed - Age rating: 4+ - Requires: iOS 18.2 · 6 MB - Languages: American English - Released: 2016-12-09 - Data updated: 2026-08-23 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/deep-time-walk-earth-history/id1163814608/reviews.md ## What is Deep Time Walk? Every metre you walk is one million years of Earth's history. Deep Time Walk turns the planet's 4.6-billion-year history into a guided audio walk. Set off, and GPS paces the narration to your own steps - 4.6 kilometres, 4,600 million years, from the molten beginning to the web of life that surround you. You walk it in company. The included "A Fool and a Scientist" narrative is a dramatised audio production. One character reaches for poetry, the other for evidence, and both circle the same question: how did a ball of hot rock become a living world? This initial Deep Time Walk narrative is directed by Jeremy Mortimer (over 200 productions for BBC Radio) and designed by Jo Langton (a BBC Studio Manager), with voices provided by leading actors Paul Hilton (Garrow’s Law, The Bill, Silent Witness), Chipo Chung (Doctor Who, Sherlock, Into the Badlands) and Peter Marinker (Love Actually, Event Horizon, Judge Dredd). The script is written by Peter Oswald (ex-playwright in residence at Shakespeare Globe, London) and Dr Stephan Harding. WHY WALK IT INSTEAD OF READING IT? Being told the Earth is 4.6 billion years old gives you a number. Walking it gives you something a number cannot - and embodied experience. Life appears early and then stays single-celled for well over half the journey. The oxygen you are breathing began as a waste product that poisoned the world that made it. Flowers arrive with a few hundred metres to go. All of recorded human history is the last few millimetres. This closing stretch is why so many people walk this. Deep Time Walk helps you think about what it means to be human today - it embodies just how unusual, and how fragile, the conditions we have inherited actually are. TWO WAYS TO WALK • Walking mode — GPS advances the story as you move, outdoors, at your own pace. • Listening mode — for those not able to walk 4.6km. WHAT YOU GET • Stunning graphics accompanying different chapters in Earth's history from a range of artists • Learn about key concepts from Earth’s long evolution including how Earth formed, the evolution of life, plate tectonics, oxygenic photosynthesis, multicellular life, The Cambrian Explosion, vertebrates, plants, amphibians, mammals, dinosaurs and finally (in the last 20cm) humans. • Around 80 minutes of original audio with an ambient soundscape • An interactive glossary - tap any idea for a plain-English explanation • Complete offline downloads, so you need no signal on the walk itself • Join a Walk - discover small, in-person, facilitator-led group walks happening near you • Background playback, so the story continues with your screen locked Step back in time and experience Earth history like never before. Deep Time Walk is a ground-breaking tool enabling anyone, anywhere to take a walking audio history of our planet. ## Key features - 4.6km walking audio history - 4.6 billion years of Earth's evolution - Key geological and biological concepts - Human impact and interconnectedness - Time-contextual glossary - Mobility-assist mode - Positive action portal ## Recent user reviews (10 of 25) All indexed reviews: https://appshunter.io/ios/app/deep-time-walk-earth-history/id1163814608/reviews.md ### 5/5 — Excellent! *2025-09-19* If I could make a mandatory listening list for humans, this would be on it. It’s good for us to remember the incredibly long time the Earth has been here and all the different ways the Earth has been, and how short human history really is. ### 5/5 — Please market this! *2024-02-27, version 1.3.0* I absolutely loved my walk through space and time, it opened up more questions in my mind than answers; questions that we should all be asking of ourselves. I only came upon this through happenstance on the App Store, and of course will share it with others, but I would urge the developers to market this further as there is more value on this app than any other I have on my phone! ### 5/5 — Wonderful Walk *2023-09-19* Thank you two for the brilliant story, I loved every moment of it ### 5/5 — Brilliant *2022-05-31, version 1.3.0* This is one of the best apps I have ever downloaded. I recommend it to all my friends. It’s incredible to get a reference point for the age of the earth and evolution of life that has occurred within it. Take this walk, you won’t regret it! ### 3/5 — Eats battery when not in use *2022-01-29* Poor battery usage ### 5/5 — Engaging and Informative *2021-10-08* This is a very informative and engaging way to learn about the earth and evolution! The charismatic dialogue kept me interested and I enjoyed the walking aspect to get more information. I think this is a fantastic educational tool. One aspect that I thought could be helpful in future updates is having the dialogue and app still play when going to the main screen of your mobile device. I found some moments I would exit out while I was walking to check the time and it would cut out. Overall I would highly recommend! ### 4/5 — Amazing, but the first bit is a turnoff *2021-02-15* I loved walking through time with this app, and I have recommended it to friends. But I had issues with the app registering my steps (mobility assist helped with that but would often switch itself off), and I really hated the poem at the beginning. I’m all in for renewable everything and I do think humans need to change how they use the earth, but that poem was the breast-beating hair-shirt-wearing self-flagellation style that really turns me off. And I nearly turned the app off because of it. I’m glad I stuck it through, but I do tell people to skip that bit. It’s like a concert beginning with crashing, clashing discord, then suddenly switching over to a calm and peaceful harmony for the duration. I also couldn’t find an explanation anywhere in the app or on their website for the graphic at the top of the app. The colors seem to represent something (oxygen levels, photosynthesis, who knows?), but I can’t figure out what. It’s really got me curious. ### 5/5 — Brilliant and totally captivating *2020-07-13, version 1.3.0* I listened to this story as I walked along a remote beach on the East Coast of Australia. I was in awe of the birth and development of Mother Earth...... I was deeply moved, contemplative and silent for hours after. 🙏 ### 5/5 — Loved it! *2020-05-22* I love this app! Best walking app yet! It is filled with information about Earth’s history. I would love to see another app similar to this one. My suggestion would be to create a second app that explains those last 1,000,000 years in more detail. ### 5/5 — This app is phenomenal. *2020-01-07* It made me cry like a baby. How don’t more people know about it?! ## Frequently asked questions about Deep Time Walk ### What is Deep Time Walk: Earth History? Deep Time Walk: Earth History is an award-winning walking audio history app that allows users to experience the 4.6 billion years of our planet's evolution. Each meter walked represents one million years, making it an immersive and educational journey through geological and biological milestones. ### What key concepts does the app cover? The app covers major concepts such as Earth's formation, the evolution of life, plate tectonics, oxygenic photosynthesis, the Cambrian Explosion, vertebrates, plants, amphibians, mammals, dinosaurs, and the ecological impact of humans. It aims to foster an understanding of our ancestral heritage and interconnectedness with all life. ### Is there a cost to use the app? The app is free to use. It is produced by Deep Time Walk CIC, a not-for-profit social enterprise, and does not feature in-app purchases or advertisements. ### What if I cannot walk the full distance? The app includes a mobility-assist mode designed for individuals who are unable to walk the full distance. This ensures that the immersive experience of Earth's history is accessible to a wider range of users. ### How does the app help with environmental action? The app features a 'What's Next' portal that directs users towards positive environmental action. It provides resources and connects users with organizations such as Earth Charter and 350.org, encouraging engagement with sustainability efforts. ## Version history (last 5 releases) ### 2.1.2 — 2026-08-21 Building on our new 2.1 release this update includes a number of enhancements and bug fixes including: - Optimised battery usage with smoother distance tracking - Glossary updates - A new opening sequence for narrative production company credits - Finishing screen images download with the walk, so they still appear when you finish when out of network range ### 2.1.1 — 2026-08-14 Bug fixes and enhancements building upon our recent 2.1 release. We hope you enjoy the journey. ### 2.1 — 2026-08-11 • A completely redesigned walk screen, with a timeline you can scrub through • 56 stunning full-screen graphics included • On-device GPS engine to provide accurate walking distances • Listening mode - experience it anywhere, with no GPS and no walking • A 120-term glossary, searchable, with definitions for the station you're on • Join a Walk - find facilitator-led Deep Time Walks happening nearby • Start over any walk at any point, from its card or the walk menu • Smarter interruptions: after a brief one the walk resumes itself, rewinding three seconds so you re-hear what was missed. After a longer one it waits for you • Image credits now appear in a walk's credits • Walk distance and language shown in the walk description • Offline downloads, so a walk is ready before you set off • Faster, steadier playback and many fixes throughout ### 1.3.0 — 2019-10-22 - New extended introductory sequence - Expanded screens support - Links to the new, tactile, Deep Time Cards ### 1.2.0 — 2019-06-05 - New extended introductory sequence - Expanded screens support - Links to the new, tactile, Deep Time Cards ## Apps similar to Deep Time Walk | App | Rating | Price | Category | | --- | --- | --- | --- | | [Ancient Earth](https://appshunter.io/ios/app/ancient-earth/id509943912) | 4.6 (157) | $2.99 | Education | | [The Earth by Tinybop](https://appshunter.io/ios/app/the-earth-by-tinybop/id1001247878) | 4.3 (81) | $3.99 | Education | | [3D Dinopedia: Paleontology](https://appshunter.io/ios/app/3d-dinopedia-paleontology/id1586806307) | 4.5 (366) | Free | Education | | [Globe: World History](https://appshunter.io/ios/app/globe-world-history/id6466718907) | 4.6 (7) | Free | Education | | [DeepTime for Geology](https://appshunter.io/ios/app/deeptime-for-geology/id1500200416) | 5.0 (7) | Free | Education | | [CofC: Discovering Our Past](https://appshunter.io/ios/app/cofc-discovering-our-past/id1499548155) | 4.7 (3) | Free | Education | ## Related topics [abdn earth](https://appshunter.io/ios/topics/abdn-earth) · [years evolution](https://appshunter.io/ios/topics/years-evolution) · [new formation](https://appshunter.io/ios/topics/new-formation) · [ancient history](https://appshunter.io/ios/topics/ancient-history) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-23.*