ReaderzDevKidz vs Tandem: Practice Languages
ReaderzDevKidz
Omar Huertas
App Store
$80/mo
~$955/yr · 2K installs
VS
Tandem: Practice Languages
Tripod Technology GmbH
App Store
$224.4K/mo
~$2.69M/yr · 4.1M installs
Revenue winner
Tandem: Practice Languages wins
+280394% vs other
Installs winner
Tandem: Practice Languages wins
+274020% vs other
MAU winner
Tandem: Practice Languages wins
+609328% vs other
Rating winner
Tandem: Practice Languages wins
+460% vs other
Why Tandem: Practice Languages is winning
Top 4 reasons - backed by the public App Store / Play Store numbers.
- Tandem: Practice Languages earns roughly 2805× more per month than ReaderzDevKidz - $224.4K vs $80.
- Subscription model. Tandem: Practice Languages runs a $5.42/mo subscription that compounds; ReaderzDevKidz relies on one-shot IAP or ads.
- Bigger install base. Tandem: Practice Languages has ~4.1M lifetime installs vs ReaderzDevKidz's ~2K - 2741.2× the funnel top.
- More monetization surfaces. Tandem: Practice Languages runs 3 IAP tiers vs 0 - more chances to convert users at the right price.
→ Find more apps with this revenue gap · Full Tandem: Practice Languages report
Side-by-side metrics
Bars scale to whichever app is bigger on that row. Green = winner.
ReaderzDevKidz
vs
Tandem: Practice Languages
Monthly revenue (est.)?
$80
▶
$224.4K
Annual revenue (est.)
$955
▶
$2.69M
Lifetime installs (est.)
2K
▶
4.1M
Monthly active users (est.)?
168
▶
1.0M
App Store rating
-
▶
4.60★
Total ratings
0
▶
37K
US grossing rank
-
=
-
Cheapest monthly sub
No sub
▶
$5.42
IAP tiers detected
0 tiers
▶
3 tiers
- Category
- Education
- Price
- USD1.99
- Released
- Jun 25, 2026
- Last updated
- Jun 25, 2026
- File size
- 1.1 MB
- Content rating
- 4+
- Version
- 1.0
- Languages
- English
- Category
- Education
- Price
- Free
- Released
- Feb 20, 2015
- Last updated
- Jun 25, 2026
- File size
- 333.6 MB
- Content rating
- 17+
- Version
- 7.20.3
- Languages
- English, French, German, Italian, Japanese, Korean +8 more
ReaderzDevKidz trajectory
Tandem: Practice Languages trajectory
FAQ
Which makes more money, ReaderzDevKidz or Tandem: Practice Languages? v
Tandem: Practice Languages earns about $224.4K per month, while ReaderzDevKidz earns about $80. That is a 2804.9× revenue gap (~$224.3K more per month for Tandem: Practice Languages). Annual revenue: ReaderzDevKidz ≈ $955/year, Tandem: Practice Languages ≈ $2.69M/year. Estimates are derived from public App Store signals - grossing rank, scraped IAP tiers, ratings and category benchmarks.
Which has more downloads, ReaderzDevKidz or Tandem: Practice Languages? v
Tandem: Practice Languages leads with about 4.1M estimated downloads vs 2K for ReaderzDevKidz - a 2741.2× gap. ReaderzDevKidz's App Store downloads are estimated from 0 ratings × the standard 1:75 ratio. Tandem: Practice Languages's App Store downloads are estimated from 37K ratings.
Are ReaderzDevKidz and Tandem: Practice Languages in the same App Store category and competing for the same money? v
Yes - both apps sit in the Education category, which means they compete directly for the same paying users and category-level wallet share. Direct competitors, head-to-head.
What in-app purchases and subscription pricing do ReaderzDevKidz and Tandem: Practice Languages offer? v
ReaderzDevKidz: no IAP detected on the public listing. Tandem: Practice Languages: IAP range 3 tiers detected. ReaderzDevKidz runs a "Paid app ($1.99)" monetization model; Tandem: Practice Languages runs "Subscription (~$5.42/mo, language)". Scraped tier prices and detected subscription pricing drive the bulk of the per-app revenue estimate above.
Which has better ratings, ReaderzDevKidz or Tandem: Practice Languages? v
Tandem: Practice Languages edges ahead with a higher overall score (gap of 4.6 stars). Rating volume: ReaderzDevKidz 0 ratings, Tandem: Practice Languages 37K ratings. Higher rating volume = stronger ASO signal even when star averages are close.
How accurate are these ReaderzDevKidz vs Tandem: Practice Languages revenue estimates? v
Directional - typically within 2-3× of actual money earned for popular apps. The $80 for ReaderzDevKidz and $224.4K for Tandem: Practice Languages are derived from App Store grossing rank, scraped IAP tiers, ratings volume and category benchmarks (Education) - net of the 15-30% Apple/Google store cut. Real revenue depends on country mix, retention, refunds and ad fill rate, none of which Apple or Google publish.
How do I compare ReaderzDevKidz or Tandem: Practice Languages to a different App Store app? v
Use the search box at the bottom of this page or paste any two App Store links into the homepage tool. We auto-generate a permanent comparison URL with revenue, downloads, IAP tiers, subscription pricing and grossing rank for both apps.