Comparison

FRITZ!App Fon vs SilicaTally

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

Head to head

FRITZ!App Fon

Free

📊 Productivity

★ 4.583K ratingsView app →

SilicaTally

Count diatoms and other taxa

$9.99

📊 Productivity

No ratingsView app →

About

FRITZ!App Fon

This app allows you to make and receive calls using your home's fixed-line network and internet connection through your FRITZ!Box. It runs in the background, ensuring you never miss a call and can easily access your phone book and answering machine.

Highlights

Make calls via FRITZ!Box
Receive calls via FRITZ!Box
Background operation
Access phone book
Use answering machine

Features

Read full description

FRITZ!App Fon verbindet sich über WLAN mit Ihrer FRITZ!Box, um zu Hause komfortabel über Festnetz und Internet zu telefonieren. Nach dem Start von FRITZ!App Fon läuft die App automatisch im Hintergrund und ermöglicht so bequem die Annahme von eingehenden Rufen sowohl während der Nutzung beliebiger Apps als auch im Standby. Ist FRITZ!App Fon einmal gestartet, telefonieren Sie mit Ihrem iPhone, iPod oder iPad wie mit einem schnurlosen Handgerät direkt über Ihre FRITZ!Box. Eingehende Rufe werden automatisch angezeigt. Zum Aufbau eines ausgehenden Rufes öffnen Sie FRITZ!App Fon und wählen über das Telefonbuch die gewünschte Zielrufnummer. Zum Abhören neuer Nachrichten auf dem FRITZ!Box-Anrufbeantworter drücken Sie lange die "1". Voraussetzungen zur Nutzung dieser App: - FRITZ!OS 7.20 oder neuer - iOS 14 oder neuer Praxis-Tipps und Antworten auf häufige Fragen finden Sie unter www.avm.de/fritzapp

About

SilicaTally

Features

Read full description

SilicaTally is an App to count diatoms. SilicaTally allows you to have an excellent overview of your data. You edit and export your data easily. With a configurable counting limit and a list of your most used species the app is simple and fast to use. You can import your own species list and even add your own reference species for different water body types. SilicaTally was developed to count diatoms, but works great with other taxa as well as long as you use genuses and species. Features: - Export - Import your own species list - Reference species per water body type - List of most used species - Counting limit and overall counter

Screenshots

FRITZ!App Fon4 screens

Verdict

The call

The clearest difference is price: FRITZ!App Fon at Free against SilicaTally's $9.99. FRITZ!App Fon also leads on update cadence (every 2 months vs every 5 months) and device support (3 vs 1). SilicaTally's advantage is iOS requirement (11.0 vs 15.0). On 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

FRITZ!App Fon is free to download; SilicaTally costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

FRITZ!App Fon ships an update every 2 months, SilicaTally every 5 months. The most recent releases landed on November 12, 2026 and May 16, 2026 respectively.

Scorecard4 real differences · 6 level

FRITZ!App Fon versus SilicaTally: the parameters behind the verdict, then further details
Parameter	FRITZ!App Fon	SilicaTally
Price	Free — better	$9.99
Rating	4.5 (83K ratings) — better	—
Positive reviews	53.5% of reviews	—
Number of ratings	83K — better	—
Update frequency	Every 2 months — better	Every 5 months
Ads	No	No
In-app purchases	No	No
Monetization	Free	—
Devices	iPhone, iPad, iPod — better	iPad
Requires iOS	15.0	11.0 — better
Further details — not scored
Size	93 MB	9 MB
Age rating	4+	4+
Developer	AVM GmbH	Jonas Goos

Bugs and requests

FRITZ!App Fon

Reported bugs

14 issues

No incoming calls when VPN is active
Calls not ringing in background mode
Audio delay when switching to speakerphone/headphones
Contact names not resolving in call list
App freezes during login with Fritz!Box

Show 9 more

International dial codes (+39, +34) not working from contacts
Keypad number 1 not functioning
DECT phone caller ID (CLIP) lost when using app
App crashes on iOS 8 and older versions
Remote station occupied error messages
Permissions error requiring full admin access to login
App not running reliably in background
Connection issues after VPN usage
Incoming calls only work when app is in foreground

Requested features

12 requests

Call transfer functionality to other extensions
Apple Watch app support with CallKit integration
Delete call list entries functionality
Search function in contact list
Fax sending capability

Show 7 more

Mobile data network support (not just WiFi)
Visual voicemail interface
Ability to forward calls to other devices
Direct calling from iOS contacts without opening app
Blacklist management within app
Multiple account selection per call
Speakerphone functionality improvements

SilicaTally

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

FRITZ!App Fon

No in-app purchases

None

SilicaTally

No in-app purchases

Questions

Is FRITZ!App Fon free?

FRITZ!App Fon is free to download, with no in-app purchases.

Is SilicaTally free?

SilicaTally costs $9.99, with no in-app purchases.

Do FRITZ!App Fon or SilicaTally have ads?

Neither FRITZ!App Fon nor SilicaTally shows ads.

Which is updated more often, FRITZ!App Fon or SilicaTally?

FRITZ!App Fon ships an update every 2 months, and SilicaTally every 5 months. Most recently, FRITZ!App Fon was updated on November 12, 2026 and SilicaTally on May 16, 2026.