How much does Calendars make per month?

Based on our ML-calibrated revenue forecast, Calendars earns approximately $17K/mo. This is a US-storefront-equivalent estimate; global revenue can be several times larger for internationally-distributed apps. See the methodology page for the full formula and confidence bands.

What apps are like Calendars?

Browse the full Productivity category catalog to find similar apps with revenue, build cost, audience and tech stack data. Each /p/{slug} page also shows a Compare side-by-side widget with three peer apps from the same niche.

Calendars is published by Readdle Technologies Limited on the Apple App Store. See the full publisher portfolio (other apps by the same developer) via the More by developer block on the product page above.

What is Calendars's BU Score?

Calendars has a BU Score of 83/100 (Excellent). The score combines App Store rating, ratings count, monetization model and revenue signals calibrated against founder-verified MRR anchors. See the BU Score formula.

Calendars: Schedule Planner

Quality Score

Excellent

Calendars: Schedule Planner

Name: Calendars: Schedule Planner — app revenue, audience, build cost & risk profile
Creator: bumetric
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Calendars: Schedule Planner revenue, Calendars: Schedule Planner app analytics, mobile app revenue estimate, Productivity revenue, iOS app revenue

High confidence

4.7 ✍️ Editor

✍️ bumetric analysis

“

Calendars: Schedule Planner is an iOS app from Readdle Technologies Limited in the Productivity category, currently rated 4.7★ across 119,363 ratings. Initial signal reads as mixed reviews: supporters praise core features while critics cite stability and value gaps.

Quality Score is 83: Excellent (strong product-market fit). For a Productivity app, that means strong product-market fit. The full BU Investment Matrix below scores 8 dimensions including monetisation, growth, and operational risk.

Track changes month-over-month in the Performance section below: live snapshot history and revenue forecast included.

💰 Monthly revenue · now vs forecast

● Right now

$1.5M

per month

→

12-mo forecast

$1.6M – $2.4M

per month

→

24-mo forecast

$1.9M – $3.5M

per month

BIG tier

💡 Grow this revenue

Free AI audit of this app’s store listing

Title & subtitle keyword fit
Description hook & conversion structure
Screenshots, ratings, reviews strategy

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Typical impact: +2-5× organic installs

📊 Performance Tracking LIVE

Loading…

idle

Rating

—

Reviews

—

Forecast Revenue / mo

—

Snapshots tracked

since first record

ONE-TIME · BUILD 💰 Estimated build cost

$100K

↳ What it cost to build · not monthly revenue

Likely range $75K – $135K

$25K · MVP floor $100K · indie scale $500K+ · studio build

📈 Pays back in ~6 months at current MRR

Synthetic estimate. Inputs: category complexity, file size, screen count, monetization layer, platform reach, age × team-size proxy. Calibrated against 2024-2026 indie-agency rate surveys. Full math + source list on /methodology.

Where the money goes

🧱 MVP baseline (design + 1-store ship)	+$28K
📱 5 unique screens × $4.5K	+$22K
📦 Asset bundle (387 MB)	+$40K
⚙ Productivity complexity ×1.10	+$9K

Total estimate $100K

ONE-TIME · EXIT VALUE 💵 Estimated acquisition value

$325K

↳ What it would sell for · not monthly revenue

Marketplace range $250K – $425K · 20× MRR multiple

💸 ~3.2× return on build cost

Synthetic estimate. Multiple band derived from ad-supported + age, rating quality, category demand, and user-base maturity. Calibrated against 2024-2026 indie-app-marketplace closed-deal medians. Full math + comparable deal list on /methodology.

How the multiple was built

📺 Ad-supported base	15× MRR
⭐ ★ rating ≥ 4.7 (premium)	+15%
🏷 Productivity category multiple	+8%
⭐ Mature user base (100K+ ratings)	+5%

Final multiple 20× MRR

👥 Estimated audience size

8.9M

Lifetime downloads (US-equivalent)

Monthly active

2.6M

Daily active

1.1M

Synthetic estimate from ratings × category benchmarks. Calibrated against 2024-2026 mobile-attribution retention + DAU/MAU reports. Numbers are US-storefront-equivalent — true global audience can be 5-10× larger for international apps. Full math + source list on /methodology.

How we sized it

📲 Productivity engagement	~75 installs / rating
🔁 Productivity D30 retention	30%
📍 DAU / MAU stickiness	0.45

DAU / MAU 43% sticky

🔬

How we forecast this revenue

MEDIUM CONFIDENCE

Baseline

$1.5M/mo · ML-estimated from 234 triggers

Growth rate

+2.5% MoM · BIG tier baseline (compound monthly)

6 months

$1.5M – $2.0M

12 months

$1.6M – $2.4M

24 months

$1.9M – $3.5M

Compound growth at +2.5% MoM (tier baseline for BIG). Range widens with horizon — typical noise band ±15% at 6mo.. Ranges widen with horizon — distant futures carry more uncertainty.

📊

BU Investment Matrix

Mixed signals · 61/100BIG TIERcompetitive but cautious

Growth Velocity

5.0

Founder Strength

7.4

Product Quality

9.4

Revenue Strength

6.2

Monetization Maturity

1.0

Defensibility

7.5

Market Position

2.0

Operational Safety

10.0

💰 Revenue: Healthy — $600K - $3300K/mo · BIG tier · medium-low confidence, trajectory unclear.
⭐ Quality: 4.72★ across 119,363 reviews — exceptional (top 1% in category).
📍 Market: Not yet charting in any of the 9 monitored markets.
📈 Growth: Insufficient signal to assess trajectory.
⚠️ Risk: Low — no material risk signals detected.

🎯 For competitors: Mixed picture. Worth competing if you have a clear UX or pricing edge — otherwise crowded segment.

💵 For acquirers: Estimated asking range 18-32× monthly = $27.0M-$48.0M.

Composite of 8 dimensions computed deterministically from public signals — no LLM, every score traces back to a measurable input. Default weights shown; "compete" / "acquire" / "invest" lenses re-weight without re-fetching.

Range:

💰 Forecast Revenue / mo

MODEL

Revenue forecast computed from BU's 234 trigger model on each snapshot. Calibrated against ground-truth from 58 verified-revenue apps.

🔬Forecast Breakdown — Why This Estimate?Top 14 of 14 triggers

Our ML model uses 200+ signals from public data. These are the most influential for this app:

High install base (119,363 ratings)METRIC		+$12,000
Excellent rating (4.7★)METRIC		+$2,200
worth every pennyREVIEW		+$2,000
bugsREVIEW		−$1,800
5 starREVIEW		+$1,800
excellent appREVIEW		+$1,500
Mature app (13y old)METRIC		+$1,500
Multilingual (10 languages)METRIC		+$1,500
highly recommendREVIEW		+$1,400
slowREVIEW		−$1,200
too expensiveREVIEW		−$1,000
support teamREVIEW		+$900
priceyREVIEW		−$800
Ad-supported / freemiumMETRIC		+$600

METRIC = structural app data · REVIEW = mined from user reviews · ✓ VERIFIED = Stripe-verified anchor (TrustMRR)

📥 Estimated Downloads / week

PROXY · ratings × 50/wk —

Industry-rule estimate (Sensor Tower / data.ai): one weekly install ≈ 50 new ratings. Solid points = tracked snapshots · faded line = pre-tracking model backfill.

📈 Reviews Growth

LIVE

Cumulative review count from first BU snapshot. Each point = a tracked update.

⭐ Rating Trend

LIVE

Average rating evolution. Updates with each new review batch.

🗓️ Snapshot Timeline

HISTORY

Each bar shows a tracked update and the metric delta from the previous snapshot.

🆕 What's New · v5.37.29

We’ve made a round of technical improvements in this update to keep your planning experience smooth and stable. As always, we're listening — drop us a note at rdsupport@readdle.com.

Profile & Insights

Everything we know — and don't — about this app and its company.

Identification

App name: Calendars: Schedule Planner
Developer: Readdle Technologies Limited
Bundle ID: com.readdle.CalendarsLite
App Store URL: Open in App Store
Category: Productivity
Content rating: 4+
Languages: EN, FR, DE, IT, JA, PT, RU, ZH, ES, UK

Company

Website: Not found
Tagline: Igniting productivity for individuals and teams
Description: Essential productivity apps that redefine what's possible on Apple devices
Founded: Not found
HQ / Address: Not found
Employees: Not found
Logo: Available

Revenue

Verified revenue / mo: Not found
AI revenue estimate / mo: $200.0K ($200.0K – $300.0K)AI medium
AI annual estimate: $2.4M/yr
ML model estimate / mo: $17.0K/mo
Top-grossing rank: 🇩🇪#14 /100 🇫🇷#38 /100 🇬🇧#61 /100 🇦🇺#63 /100 🇨🇦#64 /99 🇯🇵#77 /100 🇺🇸#84 /100
All-time revenue: Not found
Pricing: Not found

Founder

Name: Not found
X / Twitter: twitter.com/intent/tweet?original_ref…
LinkedIn: linkedin.com/shareArticle?mini=true&u…
GitHub: Not found
X followers: Not found
Public statements: Not found

Funding

Funding data not yet collected for this app.

Press & Links

Press & Links data not yet collected for this app.

Contacts & Socials

Socials: facebook facebook.com/sharer.php?t=Readdle&s=R… · instagram instagram.com/Readdle · linkedin linkedin.com/shareArticle?mini=true&u… · twitter twitter.com/intent/tweet?original_ref… · youtube youtube.com/user/ReaddleLive/videos
Email: Not found
Phone: Not found
Contact page: readdle.com/support
About page: readdle.com/about

✨AI Revenue EstimateCONFIDENCE: MEDIUM

The iOS app "Calendars: Schedule Planner" by Readdle Technologies Limited is estimated to generate approximately $200,000 in monthly revenue, with a potential high of $300,000. This translates to an estimated annual revenue of $2.4 million.

Sources mentioned: Sensor Tower, Adapty

📈Ratings growth119,363 ratings+37% lifetimeShow 3-year history estimate ▾

Tracked (44 weeks) Pre-tracking estimate (36 weeks) · model-based, ±5% noise · anchored to release date and current value

🌍Top Countries — Grossing Rank7 countries

🇩🇪DE

#14 /100

🇫🇷FR

#38 /100

🇬🇧GB

#61 /100

🇦🇺AU

#63 /100

🇨🇦CA

#64 /99

🇯🇵JP

#77 /100

🇺🇸US

#84 /100

📊Category Rank Trajectory#14 now · best #14 · worst #100

Lower line = better rank · Estimate from ratings growth model · Lower position on chart = worse rank · Higher = top of chart

🚀Version Release Timeline4 releases tracked

Profile is built from iTunes Lookup + developer site scrape + ML revenue model. Empty fields show "Not found" — additional sources (Crunchbase, X, IndieHackers, Acquire.com) coming.

📝 About this app

Calendars by Readdle is the all-in-one calendar, task manager, daily planner, and habit tracker — seamlessly working across all your Apple devices: Mac, iPhone, iPad, and Apple Watch.
Plan your day, build better habits, boost productivity, and stay organized with powerful features and smooth sync between all your devices.
What you can do with Calendars:
 • View and manage your calendar with daily, weekly, and monthly views
 • Create events, set reminders, and never miss important dates
 • Use the built-in agenda planner to focus on what matters most… View full description on the official store →

App Specs

🔐 Own this app? Claim & verify MRR →

💾 387 MB🔞 4+📱 iOS 17.5+🔖 v5.37.29🔄 updated 0d ago🌐 EN, FR, DE, IT, JA +5📂 Productivity💰 Paid

📅

What Worked™ · Development Pipeline

10 EVENTS TRACKED

Detected changes in this app over its tracked lifetime — each event links cause (what changed) to effect (what moved). Sorted newest first.See full history →Version history →

2026-05

🔧

Shipped update — v5.37.25 → v5.37.27

2026-04

⭐

Rating ↑ 3.20 → 4.72 (improved 1.52★)

2026-04

📈

Crossed 1,000 ratings — social-proof flywheel kicking in

2026-03

📈

Crossed 500 ratings — social-proof flywheel kicking in

2024-11

📈

Crossed 100 ratings — social-proof flywheel kicking in

2024-09

📈

Crossed 50 ratings — social-proof flywheel kicking in

2024-08

📈

Crossed 10 ratings — social-proof flywheel kicking in

2024-08

⭐

Rating ↑ 2.17 → 2.57 (improved 0.40★)

2024-08

⭐

Rating ↑ 1.00 → 1.75 (improved 0.75★)

2024-08

🚀

First tracked snapshot — initial data captured

🔎

ASO Keyword Positions

BEST RANK #1

Ranked for 5 App Store search queryies in our last keyword sweep. Lower position = closer to the top.

calendar planner·#1🇺🇸scheduling·#5🇺🇸bill reminder·#16🇺🇸study planner·#22🇺🇸todo list·#27🇺🇸

Last sweep: 2026-05-19 · iTunes Search API

🌍

Multi-Country Performance

Available in 9 of 9 monitored markets

Market	Rating	Reviews	Current version
🇦🇺 AU	4.66132★	12,209	4.66132★ this version
🇧🇷 BR	4.79338★	31,557	4.79338★ this version
🇨🇦 CA	4.63875★	20,476	4.63875★ this version
🇩🇪 DE	4.56194★	69,783	4.56194★ this version
🇫🇷 FR	4.56432★	36,251	4.56432★ this version
🇬🇧 GB	4.6691★	24,802	4.6691★ this version
🇮🇳 IN	4.58581★	437	4.58581★ this version
🇯🇵 JP	4.46709★	31,135	4.46709★ this version
🇺🇸 US	4.72291★	119,602	4.72291★ this version

🔔

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📝 Description

BU Score · Transcendent

Full revenue analysis

Read the article-style breakdown for Calendars: Schedule Planner: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.

Read deep-dive →