VDOT Running Calculator vs Sleeppia
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
VDOT Running Calculator
This app helps runners and coaches calculate training paces, equate race performances, and adjust for environmental factors. Based on decades of scientific research, it provides a VDOT score to measure running ability and compare performances across different distances.
- Calculate time, distance, and race paces
- Determine current training paces
- Equate race performances across distances
- Adjust paces for heat and altitude
- Measure running ability with VDOT score
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The official VDOT Running Calculator, designed by Dr. Jack Daniels - named World's Best Running Coach by Runner's World Magazine - and the team at VDOT O2. Thanks to over 50 years of scientific research conducted by legendary coach Dr. Jack Daniels, runners and coaches can quickly determine appropriate training paces, equate race performances and adjust for heat and altitude. Features: • Calculate time, distance and race paces • Calculate your current training paces • Calculate and compare the equivalent performances of a race result at other distances • Calculate the effect of temperature or altitude on training and race paces What's Your VDOT? VDOT is a measure of your current running ability. It assigns a score to all running performances, let's you determine your current training paces, and equates a race time in one distance to another. For instance, you can compare your VDOT score from a recent 5k result to a friend's score who just ran a half marathon. Who won? What VDOT Level Have You Reached? Input a race result or estimated performance and learn what score it reaches on the VDOT scale. Enter all your past performances to see which race result scores the highest. There are 10 levels starting at Beginner - White (Female: 34.3, Male: 36.8) all the way up to Professional - Gold (Female: 71, Male: 80).
Sleeppia
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Sleeppia is your complete sleep companion for iPhone. Fall asleep with a rich library of nearly 300 soothing sounds and guided breathing, and craft your own custom mixes. Then place your phone on the same bed you sleep in, keep the screen on and face it down, and let the motion sensor track your entire night — no Apple Watch needed. Wake up to a clear report with your quality score, helpful tips and everything you need to sleep better, night after night. Wind Down • A library of nearly 300 real sounds: rain, ocean waves, forest, fireplace, white/pink/brown noise, fan, café, train, singing bowl and more • Premium Mix Studio: blend up to 3 sounds at once and balance each layer with its own volume slider • Preview any single sound before adding it, then play the whole mix to hear the result • Save your favourite combinations as named presets — replay, edit or delete them anytime, or save the currently playing mix in one tap • 4-count guided breathing to calm your mind, plus volume control and a sleep timer that stops automatically Tonight • Start sleep tracking and set your wake-up time • Place your phone on the same bed you sleep in, keep the screen on and face it down (never under the pillow). In the morning, tap Stop to see the report • Premium options: sound insights (snoring / sleep talking / coughing) and the Smart Wake alarm Insights • Free: quality score, sleep efficiency, light/deep sleep, 7-night history, basic trends and a sleep calendar • Premium: stage line charts, awake/REM breakdown, night sound events, Smart Wake, full history, all trend metrics and Apple Health sync • Sleep talk is recognized in 13 languages; the interface is available in 18 Sleep stages are estimates for wellness reference only. Sleeppia is not a medical device. Plans • Free: 3 sounds, same-bed tracking, quality score, light/deep sleep, fixed alarm and 7-night history • Premium monthly: the price shown in the app — full history, every metric, the Mix Studio with saved presets, sound insights, Smart Wake, Apple Health and more Your subscription is billed to your Apple ID. Manage or cancel anytime in Settings → Apple ID → Subscriptions. Support: 296309197@qq.com 1. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ 2. Privacy Policy: https://righteous-amount-dec.notion.site/Sleeppia-Privacy-Policy-3d30473e3ba4802e878ef1f097995405?source=copy_link 3. Support: https://righteous-amount-dec.notion.site/Sleeppia-Support-3d30473e3ba48063831ac09e0d969543?source=copy_link
Screenshots
Verdict
The clearest difference is update cadence: Sleeppia at every 5 days against VDOT Running Calculator's every 4 months. VDOT Running Calculator's advantage is iOS requirement (15.0 vs 17.0). On price, ads, in-app purchases and device support 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. VDOT Running Calculator sells 1 one-off in-app purchase and Sleeppia sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.
VDOT Running Calculator ships an update every 4 months, Sleeppia every 5 days. The most recent releases landed on November 1, 2026 and October 24, 2026 respectively.
| Parameter | VDOT Running Calculator | Sleeppia |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (1.6K ratings) — better | — |
| Positive reviews | 73.8% of reviews | — |
| Number of ratings | 1.6K — better | — |
| Update frequency | Every 4 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, Apple Watch |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 38 MB | 16 MB |
| Age rating | 4+ | 17+ |
| Developer | The Run SMART Project, LLC | 干 王 |
Bugs and requests
VDOT Running Calculator
Reported bugs
3 issues- Crashes when upgrading to premium
- Can't scroll beyond 200/400m results
- Custom distance doesn't support metric
Requested features
4 requests- Expand time field to support ultras
- Add 6k and 8k distances
- Allow inputting VDOT score directly
- Allow typing in times instead of scrolling
Sleeppia
Not enough reviews yet to summarise bugs or requests.
In-app purchases
VDOT Running Calculator
- VDOT Calculator Premium2 variants$8.99
Sleeppia
- Sleeppia Premium Monthly$9.991 Month
- Sleeppia Premium Yearly$39.991 Year
Questions
Is VDOT Running Calculator free?
Is Sleeppia free?
Do VDOT Running Calculator or Sleeppia have ads?
Which is updated more often, VDOT Running Calculator or Sleeppia?
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