FIET vs Peakify
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FIET
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The FIET was developed by Barbero et al. with the aim to test Football and Futsal players' ability to deal with high-intensity intermittent exercise. The test protocol was a consequence of match and time-motion analysis to support the logical validity of the FIET. The FIET consists of shuttle-running bouts of 45 m (i.e., 3 × 15 m) performed at progressive speeds until exhaustion dictated by prerecorded audio cues. Every 45-m, subjects are allowed to actively rest for 10 seconds. After each 8 × 45 m, bout players passively rest for 30 seconds before continuing. The starting speed is set at 9 km·h−1, and speed increments during the first 9 × 45-m bouts are of 0.33 km−1, successively shifting to 0.20 km·h−1 every 45 m until exhaustion.
Peakify
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Peakify — Built for the Path to Pro Going pro isn't luck. It's conditioning, tracking, and knowing your numbers. Peakify gives young athletes the tools academy and professional clubs use to build the physical base that gets you noticed — and keeps you on the field. HIIT Interval Timer Run structured high-intensity sessions built to develop the stamina, speed, and repeated-sprint ability scouts look for. Set your work and rest, hit start, and train with intent. Game Journal Log every match and see your progress in the data. Track your performances game by game, spot patterns, and turn each session into measurable improvement. Pro Fitness Tests Benchmark yourself with the Yo-Yo Intermittent Recovery Level 1 — the same test top football clubs use to measure match fitness. Record your score, then work to beat it. Know where you stand. Train with purpose. Close the gap to the next level. Download Peakify and start training like the pros do.
Screenshots
Verdict
The clearest difference is ads: Peakify at none against FIET's shown. Peakify also leads on update cadence (every 2 weeks vs every 9 months) and iOS requirement (15.6 vs 18.0). On price, 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. Neither carries in-app purchases, so what you see is what you pay.
FIET ships an update every 9 months, Peakify every 2 weeks. The most recent releases landed on September 18, 2026 and September 8, 2026 respectively.
| Parameter | FIET | Peakify |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 9 months | Every 2 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 18.0 | 15.6 — better |
| Further details — not scored | ||
| Size | 9 MB | 38 MB |
| Age rating | 4+ | 4+ |
| Developer | Joaquin Madera Gil | Rafael Tanizawa |
In-app purchases
FIET
No in-app purchases
Peakify
No in-app purchases









