# ObCalc vs FlexPlus

The clearest difference is price: FlexPlus at Free against ObCalc's $2.99. FlexPlus also leads on update cadence (every 4 weeks vs every 3 months) and iOS requirement (15.0 vs 26.0). On ads, in-app purchases and device support there is nothing between them.

FlexPlus is free to download; ObCalc costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ObCalc ships an update every 3 months, FlexPlus every 4 weeks. The most recent releases landed on September 26, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | ObCalc | FlexPlus |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 4 weeks** |
| Size | 3 MB | 38 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Code Nine Labs LLC](https://appshunter.io/developer/983427275) | [Valere Health, Inc](https://appshunter.io/developer/1730011022) |

## What reviewers say

### ObCalc

[App page](https://appshunter.io/ios/app/obcalc/id983427276)

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

**In-app purchases:** none


### FlexPlus

[App page](https://appshunter.io/ios/app/flexplus/id6477704499)

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

**In-app purchases:** none


## Frequently asked questions

### Is ObCalc free?

ObCalc costs $2.99, with no in-app purchases.

### Is FlexPlus free?

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

### Do ObCalc or FlexPlus have ads?

Neither ObCalc nor FlexPlus shows ads.

### Which is updated more often, ObCalc or FlexPlus?

ObCalc ships an update every 3 months, and FlexPlus every 4 weeks. Most recently, ObCalc was updated on September 26, 2026 and FlexPlus on September 14, 2026.

---

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