Invoice Simple: Invoice Maker vs Buku: Invoice maker, bill book
Invoice Simple: Invoice Maker
Zenvoice Inc.
App Store
$371.9K/mo
~$4.46M/yr · 18.4M installs
VS
Buku: Invoice maker, bill book
Buku - Invoice Maker, Retail billing business apps
Google Play
$4.0K/mo
~$48.1K/yr · 133K installs
Revenue winner
Invoice Simple: Invoice Maker wins
+9185% vs other
Installs winner
Invoice Simple: Invoice Maker wins
+13738% vs other
MAU winner
Invoice Simple: Invoice Maker wins
+14053% vs other
Rating winner
Invoice Simple: Invoice Maker wins
+4% vs other
Why Invoice Simple: Invoice Maker is winning
Top 4 reasons - backed by the public App Store / Play Store numbers.
- Invoice Simple: Invoice Maker earns roughly 93× more per month than Buku: Invoice maker, bill book - $371.9K vs $4.0K.
- Aggressive pricing. Invoice Simple: Invoice Maker undercuts at $6.99/mo vs $8.99/mo - converts a higher % of free users.
- Bigger install base. Invoice Simple: Invoice Maker has ~18.4M lifetime installs vs Buku: Invoice maker, bill book's ~133K - 138.4× the funnel top.
- More monetization surfaces. Invoice Simple: Invoice Maker runs 9 IAP tiers vs 0 - more chances to convert users at the right price.
→ Find more apps with this revenue gap · Full Invoice Simple: Invoice Maker report
Side-by-side metrics
Bars scale to whichever app is bigger on that row. Green = winner.
Invoice Simple: Invoice Maker
vs
Buku: Invoice maker, bill book
Monthly revenue (est.)?
$371.9K
◀
$4.0K
Annual revenue (est.)
$4.46M
◀
$48.1K
Lifetime installs (est.)
18.4M
◀
133K
Monthly active users (est.)?
1.7M
◀
12K
App Store rating
4.87★
◀
4.67★
Total ratings
122K
◀
1K
US grossing rank
-
=
-
Cheapest monthly sub
$6.99
▶
$8.99
IAP tiers detected
9 tiers
◀
0 tiers
- Category
- Business
- Price
- Free
- Released
- Sep 18, 2013
- Last updated
- May 5, 2026
- File size
- 199.5 MB
- Content rating
- 4+
- Version
- 6.2.0
- Languages
- Czech, Danish, Dutch, English, Finnish, French +17 more
- Category
- Business
- Price
- Free
- Released
- Feb 7, 2020
- Last updated
- May 5, 2026
- File size
- -
- Content rating
- Everyone
- Version
- 8.6.3
- Languages
- -
Invoice Simple: Invoice Maker trajectory
Buku: Invoice maker, bill book trajectory
FAQ
Which makes more money, Invoice Simple: Invoice Maker or Buku: Invoice maker, bill book? v
Invoice Simple: Invoice Maker earns about $371.9K per month, while Buku: Invoice maker, bill book earns about $4.0K. That is a 92.8× revenue gap (~$367.9K more per month for Invoice Simple: Invoice Maker). Annual revenue: Invoice Simple: Invoice Maker ≈ $4.46M/year, Buku: Invoice maker, bill book ≈ $48.1K/year. Estimates are derived from public App Store / Google Play signals - grossing rank, scraped IAP tiers, ratings and category benchmarks.
Which has more downloads, Invoice Simple: Invoice Maker or Buku: Invoice maker, bill book? v
Invoice Simple: Invoice Maker leads with about 18.4M estimated downloads vs 133K for Buku: Invoice maker, bill book - a 138.4× gap. Invoice Simple: Invoice Maker's App Store downloads are estimated from 122K ratings × the standard 1:75 ratio. Buku: Invoice maker, bill book reports 100,000+ installs on Google Play.
Are Invoice Simple: Invoice Maker and Buku: Invoice maker, bill book in the same App Store category on each store and competing for the same money? v
Yes - both apps sit in the Business 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 Invoice Simple: Invoice Maker and Buku: Invoice maker, bill book offer? v
Invoice Simple: Invoice Maker: IAP range 9 tiers detected. Buku: Invoice maker, bill book: IAP range $0.49 - $164.99 per item. Invoice Simple: Invoice Maker runs a "Subscription (~$6.99/mo)" monetization model; Buku: Invoice maker, bill book runs "Subscription (~$8.99/mo)". Scraped tier prices and detected subscription pricing drive the bulk of the per-app revenue estimate above.
Which has better ratings, Invoice Simple: Invoice Maker or Buku: Invoice maker, bill book? v
Invoice Simple: Invoice Maker edges ahead with ★ 4.9 vs ★ 4.7 (gap of 0.2 stars). Rating volume: Invoice Simple: Invoice Maker 122K ratings, Buku: Invoice maker, bill book 4 ratings. Higher rating volume = stronger ASO signal even when star averages are close.
How accurate are these Invoice Simple: Invoice Maker vs Buku: Invoice maker, bill book revenue estimates? v
Directional - typically within 2-3× of actual money earned for popular apps. The $371.9K for Invoice Simple: Invoice Maker and $4.0K for Buku: Invoice maker, bill book are derived from App Store grossing rank / Google Play install ranges, scraped IAP tiers, ratings volume and category benchmarks (Business) - 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 Invoice Simple: Invoice Maker or Buku: Invoice maker, bill book to a different App Store app? v
Use the search box at the bottom of this page or paste any two App Store or Google Play 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.