# Simple One vs APECS

The clearest difference is price: APECS at Free against Simple One's $0.99. APECS also leads on update cadence (monthly vs every 13 months) and device support (3 vs 1). Simple One's advantage is rating (4.5 vs 1.7) and in-app purchases (none vs 11). On ads there is nothing between them.

APECS is free to download; Simple One costs $0.99 up front. APECS sells 11 in-app purchases, starting at $2.49 per month. Simple One asks for nothing beyond the download.

Simple One holds the better App Store score, 4.5 against 1.7. Both are backed by a comparable volume of ratings — 2 and 7 respectively. Written reviews point the same way: 50% of Simple One's written reviews are positive against 18% of APECS's.

Simple One ships an update every 13 months, APECS monthly. The most recent releases landed on October 20, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Simple One | APECS |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/simple-one-rep-max-calculator/id1191599672/reviews)** | [1.7 (7 ratings)](https://appshunter.io/ios/app/apecs-ai-posture-evaluation/id1488264106/reviews) |
| Number of ratings | 2 | **7** |
| Positive reviews | **50.0% of reviews** | 18.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 13 months | **Monthly** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 2 MB | 206 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Above AS](https://appshunter.io/developer/894620418) | [Saneftec](https://appshunter.io/developer/1669915626) |

## What reviewers say

### Simple One

[App page](https://appshunter.io/ios/app/simple-one-rep-max-calculator/id1191599672)

This app helps you accurately determine your one-rep max (1RM) using multiple proven formulas. It provides reliable estimates to help you choose the right weights for your training, ensuring safer and more effective strength progression.

**Highlights:** Accurate one-rep max estimates, Multiple proven calculation formulas, Determine training weights, Fast and simple interface, Distraction-free design

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### APECS

[App page](https://appshunter.io/ios/app/apecs-ai-posture-evaluation/id1488264106)

Analyze your posture using your device's camera for improved back health and body shape. It offers detailed assessments of various body parts, including specialized tests for symmetry and movement, with options for both automatic and manual tracking.

**Highlights:** Camera-based posture analysis, Specialized symmetry tests, Range of motion evaluation, Automatic and manual modes, Detailed PDF reports, Posture correction exercises

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| APECS Standard: 1-Month Sub | $2.49 | per month |
| APECS Pro: 1-Month Sub | $3.49 | per month |
| APECS Pro Plus: 1-Month | $5.99 | per month |
| APECS Standard: 3-Month Sub | $6.99 | per 3 months |
| APECS Pro: 3-Month Sub | $7.49 | per 3 months |
| APECS Pro Plus: 3-Month | $11.00 | per 3 months |
| APECS Pro: 6-Month Sub | $13.99 | per 6 months |
| APECS Standard: 1-Year Sub | $14.49 | per year |
| APECS Pro: 1-Year Sub | $21.99 | per year |
| APECS Pro Plus: 6-Month | $21.99 | per 6 months |
| APECS Pro Plus: 1-Year | $35.00 | per year |


## Frequently asked questions

### Is Simple One free?

Simple One costs $0.99, with no in-app purchases.

### Is APECS free?

APECS is free to download, with in-app purchases available.

### Which has better reviews, Simple One or APECS?

Simple One is rated higher. Simple One averages 4.5 out of 5 from 2 ratings, while APECS averages 1.7 from 7 ratings.

### Do Simple One or APECS have ads?

Neither Simple One nor APECS shows ads.

### Which is updated more often, Simple One or APECS?

Simple One ships an update every 13 months, and APECS monthly. Most recently, Simple One was updated on October 20, 2026 and APECS on October 25, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*