JiveBird vs SleepEngine
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
JiveBird
Create and send personalized digital messages instantly or schedule them for future delivery. This app makes thoughtful gifting quick and easy, taking less than two minutes to send a meaningful message, perfect for special occasions like Christmas.
- Send messages instantly
- Schedule message delivery
- Create messages in under 2 minutes
- Optional digital gift voucher
- Personalized gifting
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Make gifting feel personal again with JiveBird. Send a JiveBird instantly, or schedule it to arrive at the perfect moment—like Christmas morning. Creating and sending a JiveBird takes under two minutes, making it easy to share something meaningful, even at the last minute. Why JiveBird • Send a JiveBird now or schedule delivery for later • Perfect for Christmas morning surprises • Takes under 2 minutes from start to send • Optional digital gift voucher included Whether you’re near or far, JiveBird helps you deliver a thoughtful moment right on time.
SleepEngine
This app uses scientifically developed sound technology to help improve sleep quality. It guides your brain through healthy sleep cycles, aiding in falling asleep faster, staying asleep longer, and waking up refreshed. Designed to retrain natural sleep patterns, it offers personalized sleep programs for a better night's rest.
- Scientific sound technology
- Guides brain through sleep cycles
- Helps fall asleep faster
- Reduces waking times
- Personalized sleep programs
- Bluetooth connectivity to SmartPillow
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Scientific sound technology from Cambridge Sleep Sciences for all SleepEngine™ powered products. Welcome to SleepEngine™ – the App which manages all products using the unique, scientifically proven SleepEngine™ technology which helps you to improve your sleep for better health and wellbeing. GETTING THE BEST RESULTS SleepEngine™ works by retraining your brain's natural sleep patterns — so it gets better with consistent use. Most people feel a real difference after using it nightly for around two weeks. Stick with it; the science needs a little time to work. WHAT IS SLEEPENGINE™ TECHNOLOGY? A neuroscientific approach that creates sound waves matching those the adult brain produces during healthy sleep cycles. These Sleepsounds guide your brain through the correct sequence of sleep cycles, so you fall asleep faster, stay asleep longer, and improve the overall quality of your sleep. Whether you have insomnia, work shifts, wake often in the night, or simply want to sleep better - SleepEngine™ can help. HOW IT WORKS The SleepEngine™ App, once connected to your SleepEngine™ powered product, enables you to easily control your chosen Sleep Program, optional Soundscape and set your alarm, if required. When playing the Sleepsounds you'll hear low-frequency tones that guide you into sleep. Regular, repeated use helps retrain your brain to restore natural, healthy sleep patterns — all while you sleep. CHOICE OF SLEEP PROGRAMS & SOUND FEATURES Personalise your sleep experience using a selection of programs, accompanying sounds and sound controls. • Deep Sleep - a recommended 8-hour program with an 18-minute wake-up cycle and alarm • Easy Sleep - choose 2 to 8 hours when you don't have time for Deep Sleep • Fall Asleep - a 2-hour program that guides you into deep sleep • Power Nap - an energising 30, 45 or 60-minute nap Layer in calming Soundscapes - Ocean, Rain, Stream, Wind, Train, and White, Pink or Brown Noise - set your preferred alarm sound and adjust volume and balance for the optimal setup. PROVEN TECHNOLOGY In two independent trials of SleepEngine™ technology, 94% of users saw a positive improvement in their sleep - on average up to 2.5 hours more sleep per night and up to 1.5 fewer wakings. SleepEngine™ has earned strong reviews from media and customers around the world. SleepEngine™ is not a medical device and does not diagnose, treat, cure or prevent any medical condition.
Screenshots
Verdict
The clearest difference is update cadence: JiveBird at every 6 days against SleepEngine's every 6 weeks. JiveBird also leads on review sentiment (89% vs 80%). On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
JiveBird ships an update every 6 days, SleepEngine every 6 weeks. The most recent releases landed on September 28, 2026 and October 20, 2026 respectively.
| Parameter | JiveBird | SleepEngine |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 88.9% of reviews — better | 80.0% of reviews |
| Number of ratings | 1 — better | — |
| Update frequency | Every 6 days — better | Every 6 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.1 — better | 15.6 |
| Further details — not scored | ||
| Size | 64 MB | 78 MB |
| Age rating | 9+ | 4+ |
| Developer | JiveBird Ltd | Cambridge Sleep Sciences Ltd |
Customer experience
JiveBird
SleepEngine
In-app purchases
JiveBird
No in-app purchases
SleepEngine
No in-app purchases









