531 Strength vs Sentiero
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
531 Strength
This app simplifies tracking your progress on the 5/3/1 strength training program. It calculates and displays weights, reps, and sets based on your one-rep max, allowing you to easily plan and execute your workouts. Rounding options help match available gym plates.
- Calculate 5/3/1 weights
- Track 1RM for exercises
- View cycle step weights
- Round weights to available plates
- Full overview of weights, reps, sets
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Makes it quick and easy to get a full overview of all weights, reps and sets based off your 1RM when you’re following the 5/3/1 program. - Save your current 1 RM for each of the four exercises - View calculated weights for each step in the cycle - Round the weight to match the plates you have available This app is made for people who are familiar with the structure of the 5/3/1 program and who needs simple access to the calculated weights for each exercise.
Sentiero
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Uncover your path in the world, one workout at a time. Sentiero turns your outdoor workouts into an exploration map. Everywhere you've walked, run, cycled, or hiked is revealed. Everywhere you haven't been stays hidden under fog. The map starts completely covered. As you complete new workouts, the fog clears around your routes, exposing the topographic terrain beneath. Over time, you build a personal map of everywhere you've been—a picture of your world that only you could make. Sentiero reads your existing workout routes from Apple Health. There's nothing to record or configure. If you've been tracking outdoor workouts with your iPhone or Apple Watch, your map is already waiting. All data stays on your device. No accounts, no servers, no analytics.
Screenshots
Verdict
The clearest difference is price: 531 Strength at Free against Sentiero's $0.99. Sentiero's advantage is in-app purchases (none vs 4) and ads (none vs shown). On update cadence, device support and iOS requirement 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
531 Strength is free to download; Sentiero costs $0.99 up front. 531 Strength sells 4 one-off in-app purchases. Sentiero asks for nothing beyond the download.
531 Strength ships an update every 2 months, Sentiero every 3 months. The most recent releases landed on October 27, 2026 and October 9, 2026 respectively.
| Parameter | 531 Strength | Sentiero |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 4.9 (12K ratings) — better | — |
| Positive reviews | 94.0% of reviews | — |
| Number of ratings | 12K — better | — |
| Update frequency | Every 2 months — better | Every 3 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 18.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 26 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Henrik Jachobsen | Casey Childers |
Bugs and requests
531 Strength
Reported bugs
2 issues- Rest timer stops when app is backgrounded
- Plate calculator not flexible enough
Requested features
4 requests- Ability to adjust training max separately from 1RM
- Option to track rep PRs and estimated 1RM
- Accessory exercise tracking and planning
- Sync progress across devices
Sentiero
Not enough reviews yet to summarise bugs or requests.
In-app purchases
531 Strength
- Additional exercises$1.99
- Adjustable set$1.99
- Plate calculator$1.99
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- Progress log$6.99
Sentiero
No in-app purchases









