Comparison

Call Todo vs Flex Call Manager

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Create contacts from clipboard
  • Project-based contact management
  • Call history tracking
  • Direct calling and emailing
  • Color-coded project organization
  • Full-text search
Features
Read full description

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.

About

Flex Call Manager

Read full description

++ 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

Call Todo4 screens
Flex Call Manager4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

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.

Scorecard3 real differences · 7 level
Call Todo versus Flex Call Manager: the parameters behind the verdict, then further details
ParameterCall TodoFlex Call Manager
PriceFreeFree
Rating3.5 (2 ratings) — better—
Positive reviews40.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 52 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad, iPod, Mac — better
Requires iOS13.0 — better15.0
Further details — not scored
Size15 MB11 MB
Age rating4+4+
DeveloperOliver KuehneGamma Communications GmbH

In-app purchases

None

Call Todo

No in-app purchases

None

Flex Call Manager

No in-app purchases

Questions

Is Call Todo free?
Call Todo is free to download, with no in-app purchases.
Is Flex Call Manager free?
Flex Call Manager is free to download, with no in-app purchases.
Do Call Todo or Flex Call Manager have ads?
Neither Call Todo nor Flex Call Manager shows ads.
Which is updated more often, Call Todo or Flex Call Manager?
Call Todo ships an update every 52 months, and Flex Call Manager monthly. Most recently, Call Todo was updated on October 10, 2026 and Flex Call Manager on October 4, 2026.

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