OB Calc (cloud) vs AIm
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OB Calc (cloud)
This medical app helps obstetricians efficiently calculate key patient test date windows. It offers multiple calculation methods and allows for saving patient data and generating PDF reports. A free trial is available, followed by a subscription for full access.
- LMP, EDC, Ultrasound, CRL, and IVF calculations
- Customizable test date ranges
- Cross-device data syncing
- PDF report generation
- Save individual patient data
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While similar to a pregnancy wheel, OB Calc (cloud) is specifically designed by an obstetrician, for obstetricians. Finally obstetricians have an efficient and simple method to calculate the important test date windows for patients. CALCULATION METHODS • Last Menstrual Period (LMP) • Expected Delivery Date (EDC) • Sonogram Date and Fetal Age (Sonogram) • Crown Rump Length (CRL) • In Vitro Fertilization (IVF) Try the app for free for 7 days. A low monthly autorenewable subscription gives users access to premium features such as all calculation methods and saving of individual patient data. You can reach the developer directly at support@inpocketsolutions.com FEATURES • LMP, EDC, Ultrasound, CRL and IVF Method Calculations • Customize up to 15 tests, with date ranges • Data synced across multiple devices • Generate a PDF file • Save individual patient data CRL data reference : https://obgyn.onlinelibrary.wiley.com/doi/pdf/10.1002/uog.7654 Terms & Conditions: https://inpocketsolutions.com/terms ** Disclaimer Remember to test out the app on your specific device to ensure calculations are verified to your expectation.
AIm
This app helps you prepare for medical entrance exams by providing adaptive daily schedules, a question bank with detailed rationales, and AI-generated mock exams. It focuses on teaching you to think critically and identify why answers are correct or incorrect.
- Adaptive daily scheduling
- Previous year question bank
- Detailed answer rationales
- AI-generated mock exams
- Conceptual twist questions
- Performance analytics
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AIm-PG is built for one goal: a high score on NEET-PG or INI-CET — and it gets you there by teaching you to think faster, not just study harder. —————————————————————————————— SYNAPSE — ADAPTIVE DAILY SCHEDULING —————————————————————————————— Synapse is the brain of AIm-PG. It builds a personalised daily study schedule recalibrated to your exact exam date, subject confidence, and available hours — then adjusts automatically as your preparation evolves. The Synapse tracks your streak, phase rings, and retention metrics so you always know exactly what to study next. Synapse tier unlocks: Schedule, Catch-Up Pool, streak tracking, Stats. —————————————————————————————— PYQ QUESTION BANK (Pro & above) —————————————————————————————— 10+ years of NEET-PG and INI-CET previous year questions, organised by subject and topic. Where AIm-PG is different from every other app: • Right-answer rationale — a concise, exam-focused explanation of why the correct answer is correct. • Wrong-option elimination — every distractor is individually broken down. You learn precisely why Option A, B, or C is wrong, not just which letter is right. • Clinical Pearl — a high-yield, bedside-ready takeaway for rapid recall in the exam hall. • 4-Step Synapse Walkthrough — a structured solve method that shows you how to reach the answer step by step. Other apps teach what the answer is. Synapse Walkthrough teaches you how to get there — so you can apply the same reasoning to a question you've never seen before. —————————————————————————————— AI MOCKS & PRACTICE SETS (Pro+) —————————————————————————————— Pro+ adds AI-generated content that goes beyond the PYQ bank: • Unlimited full-length simulated mock exams — AI-generated, timed to real exam structure (NEET-PG / INI-CET section format and 180-minute duration). • AI Practice Sets — AI-generated question sets that target your weak subjects and push your preparation further than historical PYQs alone. • Conceptual Twists — AI generates alternative variants of the same clinical concept, showing you how examiners reframe the same knowledge across different question stems. Builds pattern recognition, not rote memory. • National percentile benchmarking and peer performance analytics — see where you stand and what to fix before exam day. All AI mock and practice questions include the same right-answer rationale, wrong-option elimination, Clinical Pearl, and 4-Step Synapse Walkthrough as PYQs. —————————————————————————————— SCHEDULE & CATCH-UP POOL (Synapse & above) —————————————————————————————— A day-by-day study timeline shows every planned session. Missed one? The Catch-Up Pool surfaces overdue blocks and lets you reschedule into open slots — no manual rebuilding required. —————————————————————————————— STATS & PROGRESS (Synapse & above) —————————————————————————————— Hexagonal radar map, donut pie chart, and subject comparison bar across all 19 medical subjects — segmented by PYQs, Practice Sets, and Mock Tests, sortable by accuracy, speed, or completion. —————————————————————————————— SUBSCRIPTION —————————————————————————————— Three tiers — Synapse, Pro, and Pro+ — on monthly, 6-month, and annual plans. Price shown at checkout. Manage or cancel anytime in your device's Store settings. Annual subscribers can add a 30-day Exam Extension. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
OB Calc (cloud) and AIm both sit at 5.0 stars, but that hides the real split: 100% of AIm's written reviews are positive against 0% of OB Calc (cloud)'s. AIm also leads on update cadence (every 4 days vs every 3 months) and iOS requirement (16.4 vs 18.0). OB Calc (cloud)'s advantage is ratings volume (5 vs 1). On price, rating, ads and in-app purchases 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
Both are free to download. OB Calc (cloud) sells 2 in-app purchases, starting at $2.99 per month and AIm sells 10 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 5.0 for OB Calc (cloud) against 5.0 for AIm. That said, the two scores are not equally well evidenced: OB Calc (cloud) has 5 ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 0% of OB Calc (cloud)'s written reviews are positive against 100% of AIm's.
OB Calc (cloud) ships an update every 3 months, AIm every 4 days. The most recent releases landed on November 11, 2026 and November 12, 2026 respectively.
| Parameter | OB Calc (cloud) | AIm |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (5 ratings) | 5.0 (1 ratings) |
| Positive reviews | 0.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 5 — better | 1 |
| Update frequency | Every 3 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone, iPad, Mac — better | iPhone, iPad |
| Requires iOS | 18.0 | 16.4 — better |
| Further details — not scored | ||
| Size | 14 MB | 62 MB |
| Age rating | 4+ | 17+ |
| Developer | Glen Botha | Akhil Sai Kumar Goud Karnati |
Customer experience
OB Calc (cloud)
AIm
In-app purchases
OB Calc (cloud)
- Monthly Subscription$2.991 Month
- Premium (Annual)$29.991 Year
AIm
- Synapse Monthly$0.991 Month
- Pro Monthly$3.991 Month
- Synapse 6-Month$4.996 Months
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- Pro+ Monthly$5.991 Month
- Synapse Annual$7.991 Year
- Pro 6-Month$12.996 Months
- Pro Annual$19.991 Year
- Synapse 30-Day Exam Extension$0.99
- Pro 30-Day Exam Extension$0.99
- Pro+ 30-Day Exam Extension$1.99
Questions
Is OB Calc (cloud) free?
Is AIm free?
Which has better reviews, OB Calc (cloud) or AIm?
Do OB Calc (cloud) or AIm have ads?
Which is updated more often, OB Calc (cloud) or AIm?
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