# Deep Flow vs CalcGate | App Lock with Math

Deep Flow and CalcGate | App Lock with Math are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Deep Flow ships an update monthly, CalcGate | App Lock with Math every 3 weeks. The most recent releases landed on September 18, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | Deep Flow | CalcGate | App Lock with Math |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Size | 9 MB | 4 MB |
| Requires iOS | **26.0** | 26.2 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Tejeshwar Amirthy](https://appshunter.io/developer/1824269130) | [HIDEYUKI INAGAKI](https://appshunter.io/developer/1819355611) |

## What reviewers say

### Deep Flow

[App page](https://appshunter.io/ios/app/deep-flow-screen-time-control/id6748088561)

**In-app purchases:** none


### CalcGate | App Lock with Math

[App page](https://appshunter.io/ios/app/calcgate-app-lock-with-math/id6762510886)

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

**In-app purchases:** none


## Frequently asked questions

### Is Deep Flow free?

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

### Is CalcGate | App Lock with Math free?

CalcGate | App Lock with Math is free to download, with no in-app purchases.

### Do Deep Flow or CalcGate | App Lock with Math have ads?

Neither Deep Flow nor CalcGate | App Lock with Math shows ads.

### Which is updated more often, Deep Flow or CalcGate | App Lock with Math?

Deep Flow ships an update monthly, and CalcGate | App Lock with Math every 3 weeks. Most recently, Deep Flow was updated on September 18, 2026 and CalcGate | App Lock with Math on September 12, 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.*