The Sleep Project vs Sleep Efficiency Tracker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
The Sleep Project
This app enhances your sleep through educational content and evidence-based tools. It offers structured programs for various sleep challenges, from insomnia to infant sleep, and is designed for participants of specific online coaching programs.
- Free educational content
- Evidence-based sleep tools
- Structured sleep improvement programs
- Tailored solutions for individual needs
- Programs for insomnia relief
- Infant sleep support
- Sleep for peak performance
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The Sleep Project app is an education-only sleep resource for adults, parents and carers. Created by our clinician-led team, it brings together practical, evidence-based tools to help you better understand sleep and build healthier habits. Inside the app: Adult Sleep Resources: videos, breathwork, meditations, yoga nidra, noise tracks, routines and practical sleep tools Baby & Child Sleep Resources: videos and guides on naps, regressions, teething, trapped wind, feeding and common sleep challenges Sleep Stories Blog: articles on insomnia, jet lag, menopause and sleep, infant sleep, circadian health, clock changes and more Check Your Sleep Symptoms: a short educational quiz to help you reflect on your sleep and receive general guidance and signposting Available in English and Spanish. Important: This app is for educational purposes only. It is not a medical device and does not diagnose, treat, cure, monitor or prevent any condition. It does not replace advice from a doctor or qualified healthcare professional. Always seek professional advice for medical concerns or before making significant changes to your sleep or health.
Sleep Efficiency Tracker
Improve sleep quality and combat insomnia using CBT-I principles. This tool helps track and optimize sleep patterns by calculating a sleep efficiency score for better rest.
- Track sleep patterns
- Calculate sleep efficiency score
- Combat insomnia
- Based on CBT-I principles
- Improve sleep quality
- Gain insights for better rest
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Improve your sleep quality and combat insomnia with the Sleep Efficiency Calculator. This simple tool, based on Cognitive Behavioral Therapy for Insomnia (CBT-I) principles, helps you track and optimize your sleep patterns. Calculate your sleep efficiency score, a key metric in assessing sleep quality, and gain insights to improve your rest. Whether you're dealing with occasional sleep issues or chronic insomnia, our app provides the data and guidance you need for better sleep.
Screenshots
Verdict
The clearest difference is update cadence: Sleep Efficiency Tracker at daily against The Sleep Project's every 2 months. Sleep Efficiency Tracker also leads on iOS requirement (13.4 vs 15.1). 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.
The Sleep Project ships an update every 2 months, Sleep Efficiency Tracker daily. The most recent releases landed on October 13, 2026 and October 6, 2026 respectively.
| Parameter | The Sleep Project | Sleep Efficiency Tracker |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | — | 1 — better |
| Update frequency | Every 2 months | Daily — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.1 | 13.4 — better |
| Further details — not scored | ||
| Size | 22 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | The Sleep Project Limited | Sebastian Smith |
In-app purchases
The Sleep Project
No in-app purchases
Sleep Efficiency Tracker
No in-app purchases
Questions
Is The Sleep Project free?
Is Sleep Efficiency Tracker free?
Do The Sleep Project or Sleep Efficiency Tracker have ads?
Which is updated more often, The Sleep Project or Sleep Efficiency Tracker?
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