# C.S.M. vs OneFlash

The clearest difference is update cadence: OneFlash at every 2 weeks against C.S.M.'s every 12 months. OneFlash also leads on review sentiment (71% vs 50%). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

C.S.M. ships an update every 12 months, OneFlash every 2 weeks. The most recent releases landed on June 2, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | C.S.M. | OneFlash |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.3 (22 ratings)](https://appshunter.io/ios/app/oneflash/id6450189093/reviews)** |
| Number of ratings | — | **22** |
| Positive reviews | 50.0% of reviews | **70.8% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 4 MB | 28 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Caisses Sociales de Monaco](https://appshunter.io/developer/1077394889) | [OneFlash](https://appshunter.io/developer/1495172902) |

## What reviewers say

### C.S.M.

[App page](https://appshunter.io/ios/app/csm/id1077394890)

Manage your social security information and access services from the Principality of Monaco. Securely connect to view your registration card, track reimbursements, and submit online requests for certificates and pensions.

**Highlights:** Secure login with social security credentials, Digital registration card and ESF code, Track benefit reimbursements and payments, Submit online requests for certificates, Simulate retirement pension, Download forms

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### OneFlash

[App page](https://appshunter.io/ios/app/oneflash/id6450189093)

Find nearby stations to rent portable phone chargers. Scan a QR code to unlock a battery, charge your device, and return it to any station in the network. Share power with friends and contribute to a more sustainable future.

**Highlights:** Locate nearby charging stations, Scan QR code to unlock battery, Charge multiple devices, Return battery to any station, 100% recyclable batteries, Flexible return policy

**In-app purchases:** none


## Frequently asked questions

### Is C.S.M. free?

C.S.M. is free to download, with no in-app purchases.

### Is OneFlash free?

OneFlash is free to download, with no in-app purchases.

### Do C.S.M. or OneFlash have ads?

Neither C.S.M. nor OneFlash shows ads.

### Which is updated more often, C.S.M. or OneFlash?

C.S.M. ships an update every 12 months, and OneFlash every 2 weeks. Most recently, C.S.M. was updated on June 2, 2026 and OneFlash on September 22, 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.*