Comparison

Numfred vs PolyDigits

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

Head to head
About

Numfred

This app helps users improve their ability to recognize spoken numbers in 13 languages. It offers two learning modes: listening and typing, or typing and listening, with options for offline learning and adjustable difficulty.

Highlights
  • Recognize spoken numbers
  • Practice numbers in 13 languages
  • Listen & Type learning mode
  • Type & Listen learning mode (Premium)
  • Offline learning
  • Adjustable voice speed (Premium)
Features
Read full description

Numfred trains a core skill in language learning: recognizing spoken numbers with confidence. Perfect for language courses, work, and school. Boost your listening comprehension and learn numbers in 13 languages: English, Spanish, French, Chinese, German, Italian, Japanese, Korean, Russian, Portuguese, Swedish, Dutch, and Turkish. Learning Mode 1 “Listen & Type” Hear a number, type it. Got it right? The next one appears instantly—an easy, game-like flow with quick wins for beginners and advanced learners. Learning Mode 2 „Type & Listen“ (Premium) Type any number and hear how it’s pronounced. Use the Step button to practice in increments of 1, 10, 100, or 1,000—ideal for beginners and for rapid drills in specific number ranges. Try it now: Download Numfred and try Basic with no time limit or sign-up required. Basic - Learn numbers in 13 languages - Learning Mode 1 “Listen & Type” (three skill levels) - Limited number ranges - Learn offline - No ads Premium (one-time purchase, no subscription) - Learn numbers in 13 languages - Learning Mode 1 “Listen & Type” (three skill levels) - Learning Mode 2 „Type & Listen“ - Extended number ranges up to 999,999 - Adjustable voice speed - Configurable digit grouping (3-digit or 4-digit/myriads) - Custom number separators - Learn offline - No ads

About

PolyDigits

Features
Read full description

PolyDigits — Master numbers in any language Numbers are the fastest way to feel confident in a language: prices, times, addresses, quantities. PolyDigits trains exactly that — with active drills instead of passive studying. Three ways to practice: • Listen/Drill: Hear a number → type it → check instantly. • Flash Mode: Reveal and listen when you’re ready. • Math: Train mental math and automate number fluency along the way. Why it works • Authentic pronunciation: Uses your iPhone’s native text-to-speech voice. • Focused & simple: No fluff — just training. • Progress you can see: Track what you’ve done each day. Completely free No ads. No locked features. If you want, you can buy me a coffee :) Private: no accounts, no data sharing (everything stays on-device).

Screenshots

Numfred4 screens
PolyDigits4 screens

Verdict

The call

The clearest difference is update cadence: PolyDigits at every 5 days against Numfred's monthly. Numfred's advantage is iOS requirement (18.0 vs 26). On price, ads, in-app purchases and device support 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. Numfred sells 1 one-off in-app purchase and PolyDigits sells 4 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Numfred ships an update monthly, PolyDigits every 5 days. The most recent releases landed on July 6, 2026 and September 19, 2026 respectively.

Scorecard2 real differences · 7 level
Numfred versus PolyDigits: the parameters behind the verdict, then further details
ParameterNumfredPolyDigits
PriceFreeFree
Rating4.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyMonthlyEvery 5 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone
Requires iOS18.0 — better26
Further details — not scored
Size33 MB4 MB
Age rating4+4+
DeveloperFrank BenkelmannDaniel Kwetschas

In-app purchases

1 purchases

Numfred

One-time1
  • Premium$9.99
4 purchases

PolyDigits

Subscriptions1
  • Coffee Subscription$1.991 Month
One-time3
  • Small Coffee$2.99
  • Medium Coffee$3.99
  • Large Coffee$5.99

Questions

Is Numfred free?
Numfred is free to download, with in-app purchases available.
Is PolyDigits free?
PolyDigits is free to download, with in-app purchases available.
Do Numfred or PolyDigits have ads?
Neither Numfred nor PolyDigits shows ads.
Which is updated more often, Numfred or PolyDigits?
Numfred ships an update monthly, and PolyDigits every 5 days. Most recently, Numfred was updated on July 6, 2026 and PolyDigits on September 19, 2026.

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