# HoldOn by CE vs OptoFitting

HoldOn by CE and OptoFitting both sit at 5.0 stars, but that hides the real split: 100% of OptoFitting's written reviews are positive against 33% of HoldOn by CE's. HoldOn by CE's advantage is in-app purchases (none vs 2) and update cadence (every 2 weeks vs monthly). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. OptoFitting sells 2 in-app purchases, starting at $19.99 per month. HoldOn by CE asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for HoldOn by CE against 5.0 for OptoFitting. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews are what separate them: 33% of HoldOn by CE's written reviews are positive against 100% of OptoFitting's.

HoldOn by CE ships an update every 2 weeks, OptoFitting monthly. Both last shipped on November 3, 2026.

## The numbers

| Metric | HoldOn by CE | OptoFitting |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/holdon-by-ce/id1528920724/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/optofitting/id1576655068/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 33.3% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Monthly |
| Monetization | **Free** | Free with in-app purchases |
| Size | 57 MB | 16 MB |
| Requires iOS | **9.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [ClearElectron Co.,Ltd.](https://appshunter.io/developer/1533006627) | [Alireza Nazer](https://appshunter.io/developer/1576655070) |

## What reviewers say

### HoldOn by CE

[App page](https://appshunter.io/ios/app/holdon-by-ce/id1528920724)

This app works with a smart device to monitor your screen time, posture, and lighting conditions. It alerts you with vibrations when you're too close to your screen, slouching, or in dim light, helping you develop healthier digital habits.

**Highlights:** Posture monitoring, Screen proximity alerts, Lighting condition detection, Digital device time tracking, Customizable alert settings, Habit formation tracking

**Features:** macOS Compatibility

**In-app purchases:** none


### OptoFitting

[App page](https://appshunter.io/ios/app/optofitting/id1576655068)

Streamline progressive and single-vision lens fitting with precise, repeatable measurements. This app guides you through capturing key fitting parameters using a 3D printed jig and your device, reducing errors and speeding up the process for eyewear professionals.

**Highlights:** Precise fitting measurements, Step-by-step workflow, 3D printable jig included, Tutorial videos and FAQs, Reduces fitting errors, Fast workflow for professionals

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium 1 Month(+3 Month free) | $19.99 | per month |
| Premium 6 Month(+3 Month free) | $106.99 | per 6 months |


## Frequently asked questions

### Is HoldOn by CE free?

HoldOn by CE is free to download, with no in-app purchases.

### Is OptoFitting free?

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

### Which has better reviews, HoldOn by CE or OptoFitting?

HoldOn by CE and OptoFitting are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do HoldOn by CE or OptoFitting have ads?

Neither HoldOn by CE nor OptoFitting shows ads.

### Which is updated more often, HoldOn by CE or OptoFitting?

HoldOn by CE ships an update every 2 weeks, and OptoFitting monthly. Most recently, HoldOn by CE was updated on November 3, 2026 and OptoFitting on November 3, 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.*