# By vs I

By and I 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.

Both ship on a similar rhythm, roughly every 7 months. The most recent releases landed on October 14, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | By | I |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | Every 7 months |
| Monetization | Free | — |
| Size | 8 MB | 57 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Vimar S.p.A.](https://appshunter.io/developer/401438010) | [PSTM SRL](https://appshunter.io/developer/1449013006) |

## What reviewers say

### By

[App page](https://appshunter.io/ios/app/by-clima/id893553317)

Control and program smart home climate devices remotely. Manage touch timers and thermostats from your smartphone for convenient temperature regulation and energy monitoring.

**Highlights:** Program touch timer-thermostats, Local supervision of devices, Remote supervision of devices, Control Clima&Energy devices, Smartphone integration, Energy monitoring

**In-app purchases:** none


### I

[App page](https://appshunter.io/ios/app/i-eus/id1533720299)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is By free?

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

### Is I free?

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

### Do By or I have ads?

Neither By nor I shows ads.

### Which is updated more often, By or I?

By ships an update every 7 months, and I every 7 months. Most recently, By was updated on October 14, 2026 and I on October 10, 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.*