# Deep Time Walk vs Last Second Language

The clearest difference is in-app purchases: Deep Time Walk at none against Last Second Language's 7. Last Second Language's advantage is iOS requirement (15.1 vs 18.2). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Last Second Language sells 7 one-off in-app purchases. Deep Time Walk asks for nothing beyond the download.

Deep Time Walk ships an update every 5 months, Last Second Language every 3 months. The most recent releases landed on November 2, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Deep Time Walk | Last Second Language |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (33 ratings)](https://appshunter.io/ios/app/deep-time-walk-earth-history/id1163814608/reviews)** | — |
| Number of ratings | **33** | — |
| Positive reviews | 92.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 months** |
| Monetization | Free | — |
| Size | 6 MB | 63 MB |
| Requires iOS | 18.2 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Deep Time Walk C.I.C.](https://appshunter.io/developer/1163814607) | [Jonathan Michael Bruno](https://appshunter.io/developer/1724076655) |

## What reviewers say

### Deep Time Walk

[App page](https://appshunter.io/ios/app/deep-time-walk-earth-history/id1163814608)

Experience Earth's 4.6 billion-year history through an immersive walking audio tour. Learn about major evolutionary milestones and human impact, with a glossary and mobility-assist option. Connect with nature and discover pathways for positive environmental action.

**Highlights:** 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

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Last Second Language

[App page](https://appshunter.io/ios/app/last-second-language/id6759878954)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| French Language Pack | $3.99 | one-time |
| Japanese Language Pack | $3.99 | one-time |
| Italian Language Pack | $3.99 | one-time |
| Portuguese Language Pack | $3.99 | one-time |
| Spanish Language Pack | $3.99 | one-time |
| Norwegian Language Pack | $3.99 | one-time |
| All Language Packs | $9.99 | one-time |


## Frequently asked questions

### Is Deep Time Walk free?

Deep Time Walk is free to download, with no in-app purchases.

### Is Last Second Language free?

Last Second Language is free to download, with in-app purchases available.

### Do Deep Time Walk or Last Second Language have ads?

Neither Deep Time Walk nor Last Second Language shows ads.

### Which is updated more often, Deep Time Walk or Last Second Language?

Deep Time Walk ships an update every 5 months, and Last Second Language every 3 months. Most recently, Deep Time Walk was updated on November 2, 2026 and Last Second Language on November 5, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*