# boltio vs Onix Renta

The clearest difference is update cadence: boltio at every 2 weeks against Onix Renta's every 3 months. Onix Renta's advantage is iOS requirement (15.0 vs 26.5). On price, ads, in-app purchases and device support there is nothing between them.

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

boltio ships an update every 2 weeks, Onix Renta every 3 months. The most recent releases landed on September 20, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | boltio | Onix Renta |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/boltio/id836558281/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 months |
| Monetization | Free | — |
| Size | 1 MB | 36 MB |
| Requires iOS | 26.5 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kinetica Mobile Development](https://appshunter.io/developer/432275806) | [Onix Renta, S.L.](https://appshunter.io/developer/1648897224) |

## What reviewers say

### boltio

[App page](https://appshunter.io/ios/app/boltio/id836558281)

Estimate the cost of electricity for specific appliances and understand real-time kilowatt prices. Make informed decisions to reduce your electricity bill by choosing optimal times for appliance usage.

**Highlights:** Estimate appliance electricity cost, Real-time kilowatt price estimation, Appliance cost breakdown, Identify cost differences across time slots, Save on electricity bills

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

**In-app purchases:** none


### Onix Renta

[App page](https://appshunter.io/ios/app/onix-renta/id6443736479)

**In-app purchases:** none


## Frequently asked questions

### Is boltio free?

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

### Is Onix Renta free?

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

### Do boltio or Onix Renta have ads?

Neither boltio nor Onix Renta shows ads.

### Which is updated more often, boltio or Onix Renta?

boltio ships an update every 2 weeks, and Onix Renta every 3 months. Most recently, boltio was updated on September 20, 2026 and Onix Renta on September 23, 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.*