Call Todo vs Flex Call Manager
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Call Todo
This app helps sales representatives manage call-backs and track call history for short-term projects. Easily create contacts from your clipboard and organize them by project with color-coding. Make calls and send emails directly from the app.
- Create contacts from clipboard
- Project-based contact management
- Call history tracking
- Direct calling and emailing
- Color-coded project organization
- Full-text search
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You are a sales representative receiving numerous calls and you find it hard to remember at the end of each day who called you and whom you need to call back. You do not want to overload your address book with contacts for short-term projects. This app will support you with your daily business. It enables you to take notes about your calls and return calls directly from your app. Copy phone numbers from the Apple phone app to the clipboard and open our app “Call Todo”. A new contact will be created automatically. There is no simpler way to do this. Features: - Creating contacts using a phone number from the clipboard - Project-related management of contacts - For each contact a history of events can be compiled. - Filter for projects, calls to do and full text search - Project management using colors - Direct calls to contacts in the app - Direct e-mails from the app - Adding of contacts to address book 'Call Todo' offers the same functionality as 'Call Todo Pro' but it displays advertisements.
Flex Call Manager
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++ Achtung: Die Flex Call Manager App funktioniert nur in Verbindung mit einem aktiven Account ++ Flex Call Manager ist ein modernes Kommunikationssystem von Gamma. Holen Sie sich Ihre Telefonanlage auf Ihr Smartphone. Über diese App verwenden Sie Ihr Smartphone als mobile Nebenstelle Ihrer virtuellen Telefonanlage. Empfangen und starten Sie weltweit Anrufe unter Ihrer Festnetznummer und telefonieren Sie kostengünstig auch unterwegs. Nutzen Sie die Funktionen Ihrer Telefonanlage sowie alle Features der Gamma FlexPBX.
Screenshots
Verdict
The clearest difference is update cadence: Flex Call Manager at monthly against Call Todo's every 52 months. Flex Call Manager also leads on device support (4 vs 2). Call Todo's advantage is iOS requirement (13.0 vs 15.0). On price, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Call Todo ships an update every 52 months, Flex Call Manager monthly. The most recent releases landed on October 10, 2026 and October 4, 2026 respectively.
| Parameter | Call Todo | Flex Call Manager |
|---|---|---|
| Price | Free | Free |
| Rating | 3.5 (2 ratings) — better | — |
| Positive reviews | 40.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 52 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 15 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Oliver Kuehne | Gamma Communications GmbH |
In-app purchases
Call Todo
No in-app purchases
Flex Call Manager
No in-app purchases









