# C2CRM vs Hotstart Heater Sizing App

The clearest difference is ratings volume: C2CRM at 18 against Hotstart Heater Sizing App's 2. Hotstart Heater Sizing App's advantage is iOS requirement (12.0 vs 15.6). On price, rating, review sentiment and update cadence there is nothing between them.

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

On the App Store both sit at effectively the same score — 4.9 for C2CRM against 5.0 for Hotstart Heater Sizing App. That said, the two scores are not equally well evidenced: C2CRM has 18 ratings behind it against 2, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

C2CRM ships an update every 3 weeks, Hotstart Heater Sizing App every 5 weeks. The most recent releases landed on October 13, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | C2CRM | Hotstart Heater Sizing App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (18 ratings)](https://appshunter.io/ios/app/c2crm/id605389749/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/hotstart-heater-sizing-app/id1437481017/reviews)** |
| Number of ratings | **18** | 2 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 5 weeks |
| Monetization | Free | Free |
| Size | 23 MB | 24 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Clear C2, Inc](https://appshunter.io/developer/605389752) | [HotStart](https://appshunter.io/developer/1264092383) |

## What reviewers say

### C2CRM

[App page](https://appshunter.io/ios/app/c2crm/id605389749)

This mobile application extends the functionality of a desktop CRM to your phone and tablet. It allows users to create, view, and edit all customer records, access custom fields, and get real-time updates on open issues. Manage client communications and build your sales pipeline directly from your device.

**Highlights:** Create, view, edit records, Access custom fields, Real-time issue updates, Client communication management, Build sales pipeline, Daily snapshot view

**Features:** macOS Compatibility

**In-app purchases:** none


### Hotstart Heater Sizing App

[App page](https://appshunter.io/ios/app/hotstart-heater-sizing-app/id1437481017)

This application helps users select the optimal engine heater for industrial applications. It considers factors like fluid type, environmental conditions, and power requirements to provide a recommended solution. Users can then contact the developer to confirm their heater choice.

**Highlights:** Heater selection based on application details, Considers fluid type and environmental conditions, Calculates based on dimensions and power needs, Provides a recommended heater solution, Facilitates verification with the developer

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is C2CRM free?

C2CRM is free to download, with no in-app purchases.

### Is Hotstart Heater Sizing App free?

Hotstart Heater Sizing App is free to download, with no in-app purchases.

### Which has better reviews, C2CRM or Hotstart Heater Sizing App?

Hotstart Heater Sizing App is rated higher. C2CRM averages 4.9 out of 5 from 18 ratings, while Hotstart Heater Sizing App averages 5.0 from 2 ratings.

### Do C2CRM or Hotstart Heater Sizing App have ads?

Neither C2CRM nor Hotstart Heater Sizing App shows ads.

### Which is updated more often, C2CRM or Hotstart Heater Sizing App?

C2CRM ships an update every 3 weeks, and Hotstart Heater Sizing App every 5 weeks. Most recently, C2CRM was updated on October 13, 2026 and Hotstart Heater Sizing App on October 24, 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.*