# Prorate Calculator Pro — Save & share prorated rent > Calculators for prorated rent, late fees, deposits, rent increases, and utility splits with state law guidance. (iPhone/iPad app by IROIRO LLC.) - Source: https://appshunter.io/ios/app/prorate-calculator-pro/id1435048159 (this page in markdown: same URL + `.md`) - Developer: [IROIRO LLC](https://appshunter.io/developer/1435048158) - Category: Utilities, Productivity - Price: Free with in-app purchases (on sale, was $1.99) - Rating: 5.00/5 from 5 App Store ratings · 2 written reviews indexed - Age rating: 4+ - Requires: iOS 17.0 · 8 MB - Languages: English - Released: 2018-11-27 - Data updated: 2026-07-02 - Monetization: freemium - User reviews in markdown: https://appshunter.io/ios/app/prorate-calculator-pro/id1435048159/reviews.md ## What is Prorate Calculator Pro? Stop guessing at prorated rent, late fees, and deposit deadlines. Prorate Calculator Pro gives landlords, property managers, and tenants six calculators with built-in state law guidance for all 50 states plus DC — so every number you share is accurate and defensible. SIX CALCULATORS • Rent Proration — Get the daily rate and prorated amount instantly using Actual Days, Banker's Month, or Annual Rate methods. Compare all three side by side for your apartment, condo, or home. • Affordability — Evaluate tenant income against the 3x Monthly, 40x Annual, and HUD 30% benchmarks. Works both directions. Always free. • Late Fee — Calculate flat or percentage-based fees with state-specific grace periods and fee caps. Know exactly what you can legally charge. • Security Deposit Interest — Compute interest owed on tenant deposits with state and city-level rates. Tracks the return deadline after move-out. • Rent Increase — Check proposed increases against state rent caps with live CPI data for California, Oregon, DC, and more. Flags notice period requirements. • Utility Split — Allocate shared bills across rental units using equal, square footage, occupant, or hybrid methods with per-unit breakdowns. PROPERTY AND LEASE MANAGEMENT Track your properties, tenants, and leases in one place. See lease status, days remaining, and expiration alerts at a glance. Open any calculator from a lease and inputs auto-populate with the lease data. SMART ALERTS Automatic notifications for lease expirations at 90, 60, and 30 days. Monthly rent due reminders. Deposit return deadline alerts. Rent increase notice period warnings. AI-POWERED INSIGHTS On-device intelligence ranks your upcoming lease events by urgency and surfaces plain-language next steps. 100% on-device — no data leaves your phone. FREE TO START The rent proration and affordability calculators are free with no limits. Upgrade to Premium to unlock all six calculators, property management, iCloud sync, smart alerts, AI insights, widgets, and move-in/move-out photo documentation. Questions or feedback? Contact us at support@iroiro.us Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://iroiro.us/pages/privacy-policy.html ## Key features - Rent Proration Calculator (Actual Days, Banker's Month, Annual Rate) - Affordability Calculator (3x Monthly, 40x Annual, HUD 30%) - Late Fee Calculator (Flat, Percentage, Grace Periods) - Security Deposit Interest Calculator - Rent Increase Calculator (State Caps, CPI Data) - Utility Split Calculator (Equal, Square Footage, Occupant) - Property and Lease Management - Smart Alerts for Lease Expirations and Deadlines ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Premium - Monthly | $2.99 | per month | | Premium - Annual | $19.99 | per year | **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Premium - Lifetime | $49.99 | one-time | | Premium - Lifetime Loyalty Price | $39.99 | one-time | ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/prorate-calculator-pro/id1435048159/reviews.md ### 5/5 — Thank you!! *2026-03-14* Best $2 I’ve spent! ### 5/5 — Super helpful with a great UI *2018-11-27* The app is really helpful. I appreciate the share/save feature, especially since it lays out the numbers to explain how it came to it’s calculation. And all this is housed in a nice, clean interface. ## Frequently asked questions about Prorate Calculator Pro ### What is Prorate Calculator Pro? Prorate Calculator Pro is a utility app designed to help landlords, property managers, and tenants accurately calculate prorated rent, late fees, security deposit interest, and rent increases. It offers six specialized calculators with built-in state law guidance for all 50 states plus DC. ### Does Prorate Calculator Pro have ads? No, Prorate Calculator Pro does not contain advertisements. The app is free to start with core calculators and offers a premium upgrade for additional features. ### What are the free features of Prorate Calculator Pro? The rent proration and affordability calculators are available for free with no usage limits. These tools allow users to perform essential calculations without needing to upgrade. ### What is included in the Premium upgrade for Prorate Calculator Pro? The Premium upgrade unlocks all six calculators, comprehensive property management features, iCloud sync, smart alerts, AI-powered insights, widgets, and move-in/move-out photo documentation. This provides a complete solution for property management needs. ### How does Prorate Calculator Pro handle state-specific laws? The app includes built-in guidance for state laws across all 50 states and DC. This ensures that calculations for late fees, rent increases, and other financial aspects are accurate and legally defensible according to local regulations. ### What devices is Prorate Calculator Pro available on? Prorate Calculator Pro is available on iPhone, iPad, and iPod devices. It is designed to be accessible across Apple's mobile ecosystem. ### How often is Prorate Calculator Pro updated? The app was last updated on April 15, 2026, indicating it receives regular updates to ensure functionality and compliance with current laws and features. The latest version is 2.0.2. ### What is the user sentiment for Prorate Calculator Pro? Prorate Calculator Pro has received excellent user feedback, holding a 5.0-star rating from 5 reviews. This suggests a high level of user satisfaction with its accuracy and features. ## Version history (last 4 releases) ### 2.0.2 — 2026-04-15 Prorate Calculator Pro has been completely rebuilt from the ground up. NEW CALCULATORS Four new calculators join the original rent proration engine: — Late Fee: Calculate flat or percentage-based fees with state-specific grace period and fee cap guidance for all 50 states plus DC. — Security Deposit Interest: Compute interest owed on tenant deposits with state and city-level rates. Tracks the return deadline after move-out. — Rent Increase: Check proposed increases against state rent caps with live CPI data for California, Oregon, DC, and more. — Utility Split: Allocate shared bills across units using equal, square footage, occupant, or hybrid methods. **The Affordability Calculator is also new and completely free — evaluate tenant income against the 3x, 40x, and 30% HUD benchmarks.** PROPERTY AND LEASE MANAGEMENT Create and manage properties, tenants, and leases. Track lease status with countdown badges. Open any calculator from a lease and inputs auto-populate with the lease data. SMART NOTIFICATIONS Automatic alerts for lease expirations (90/60/30 days), monthly rent due reminders, deposit return deadlines, and rent increase notice periods. AI-POWERED INSIGHTS On-device intelligence surfaces your most urgent upcoming events with plain-language summaries and suggested actions. 100% on-device — no data leaves your phone. ALSO NEW — Home screen and lock screen widgets — Move-in/move-out photo documentation — iCloud sync across all your devices — Guided onboarding with state-law personalization — Rent roll PDF export — Redesigned calculation history with favorites, search, and shareable reports ### 1.1.9 — 2025-04-15 Bug fixes and general updates ### 1.1.8 — 2025-04-15 Bug fixes and general updates ### 1.1.7 — 2018-11-27 No release notes. ## Apps similar to Prorate Calculator Pro | App | Rating | Price | Category | | --- | --- | --- | --- | | [Hours And Minutes Calculator](https://appshunter.io/ios/app/hours-and-minutes-calculator/id1048411060) | 5.0 (2) | $0.99 | Utilities | | [Interpolation Calculator Pro](https://appshunter.io/ios/app/interpolation-calculator-pro/id6751057449) | — | $0.99 | Utilities | | [U/R Simple](https://appshunter.io/ios/app/ur-simple/id1559885189) | 5.0 (5) | Free | Utilities | | [utiliVisor MyRead Pro](https://appshunter.io/ios/app/utilivisor-myread-pro/id6443967174) | — | Free | Utilities | | [PestMath: Pest Pro Calculator](https://appshunter.io/ios/app/pestmath-pest-pro-calculator/id6744030839) | 5.0 (1) | Free | Utilities | | [Leastimator](https://appshunter.io/ios/app/leastimator/id1228501014) | 4.2 (49) | Free | Utilities | ## More apps by IROIRO LLC - [Supernatural Atomic Love](https://appshunter.io/ios/app/supernatural-atomic-love/id1515369338) - [17on: A Haiku Poetry Journal](https://appshunter.io/ios/app/17on-a-haiku-poetry-journal/id6443743198) - [MeMemes - Meme & GIF Organizer](https://appshunter.io/ios/app/mememes-meme-and-gif-organizer/id6738795310) - [AsaGoTomo™ - Pan Sticker Pack](https://appshunter.io/ios/app/asagotomo-pan-sticker-pack/id6745231649) All apps by IROIRO LLC: https://appshunter.io/developer/1435048158 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-02.*