Kalam vs LabCalcPro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Kalam
This app offers an immersive approach to learning Arabic, focusing on practical language skills. Engage in realistic AI conversations, follow structured courses with speaking drills and video lessons, and reinforce learning with flashcards. It aims to quickly improve your ability to speak the language.
- Realistic AI conversation practice
- Immersive course with speaking drills
- Video lessons
- Interactive questions
- Flashcard review
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Kalam helps you learn Arabic immersively, skipping the fluff and getting straight to what matters. A Kalam subscription is required to access the features below. Subscriptions are available through in-app purchase. AI conversation practice (subscription required): talk with realistic AI partners in different everyday scenarios Immersive course (subscription required): speaking drills, video lessons, and interactive questions Flashcard review (subscription required): review vocabulary and build your speaking skills Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
LabCalcPro
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LabCalcPro is a precision serial dilution and solution preparation calculator for laboratory professionals. Enter your inputs and get step-by-step, bench-ready protocols instantly. WHAT IT DOES • Advanced serial dilution engine using the standard C1V1 = C2V2 formula • Automatically plans multi-stage serial dilutions for extreme ratios (≥1000×), now supporting up to 3 stages when required • Selects the best pipette from your available set • Rounds volumes to match real pipette resolution • Generates numbered, executable protocol steps • Shows full math derivations for verification NEW IN v1.2 AUTOMATIC 3-STAGE SERIAL DILUTION • Extends the solver beyond 2 stages for extreme dilution ratios • Transparently selects 1-, 2-, or 3-stage plans based on feasibility and pipette comfort • Labels intermediates clearly with concentration units • Documents stage selection reasoning in Show Math SAVED SOLUTES • Save frequently used molecular weights with a custom name • Instantly recall solutes from a searchable picker • Edit or delete saved solutes anytime • Stored locally on your device MOLARITY ↔ MASS • Calculate the mass of solute needed for a target molarity and volume • Or compute resulting molarity from a measured mass • Weighability-aware rounding aligned with analytical balance precision • Volumetric preparation assumption clearly documented in Show Math BENCH MODE Tap the flask icon to enter Bench Mode. The screen stays awake, inputs collapse, and protocol steps display in large text for use directly at the bench. BUILT FOR SCIENTISTS • Supports P10, P20, P200, and P1000 pipettes (customizable) • Handles M, mM, µM, and nM concentrations and L, mL, and µL volumes • Warns when transfer volumes are at pipette limits • Names intermediate solutions with concentrations during serial dilutions • Per-stage math transparency for serial workflows SAVE AND SHARE • Name and save calculations for later reference • Load saved calculations back into the calculator • Copy protocol steps to the clipboard • Export full calculations for sharing TRANSPARENT AND PRIVATE • All calculations run entirely on your device • No account required • No cloud sync, tracking, or ads • Full math shown for every calculation • Deterministic results; identical inputs always produce identical outputs LabCalcPro performs mathematical calculations only. It does not provide medical, clinical, safety, or experimental technique guidance.
Screenshots
Verdict
The clearest difference is update cadence: LabCalcPro at every 3 days against Kalam's every 10 days. Kalam's advantage is chart position (#159 vs unranked). On price, ads, in-app purchases and device support 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. Kalam sells 10 in-app purchases, starting at $9.99 per month and LabCalcPro sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Kalam ships an update every 10 days, LabCalcPro every 3 days. The most recent releases landed on November 12, 2026 and October 28, 2026 respectively.
| Parameter | Kalam | LabCalcPro |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (6.8K ratings) — better | — |
| Positive reviews | 33.0% of reviews | — |
| Number of ratings | 6.8K — better | — |
| Update frequency | Every 10 days | Every 3 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Best chart rank | #159 — better | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.1 — better | 16.4 |
| Further details — not scored | ||
| Size | 240 MB | 44 MB |
| Age rating | 4+ | 4+ |
| Developer | NODE ZERO INC | Matthew Fishman |
Bugs and requests
Kalam
Reported bugs
2 issues- Login/signup issues
- Glitches preventing access to lessons
Requested features
2 requests- More free content options
- Ability to access lessons without paid subscription
LabCalcPro
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Kalam
- Kalam | Monthly$9.991 Month
- Kalam | Free Trial3 Days trial$29.991 Year
- Kalam | Free Trial3 Days trial$34.991 Year
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- Kalam | Free Trial7 Days trial$34.991 Year
- Kalam | Free Trial7 Days trial$44.991 Year
- Kalam | Free Trial3 Days trial$49.991 Year
- Kalam | Free Trial7 Days trial$49.991 Year
- Kalam | Free Trial7 Days trial$59.991 Year
- Kalam | Free Trial7 Days trial$69.991 Year
- Kalam | Free Trial (1 Year)7 Days trial$99.991 Year
LabCalcPro
- LabCalcPro Lifetime$5.99
Questions
Is Kalam free?
Is LabCalcPro free?
Do Kalam or LabCalcPro have ads?
Which is updated more often, Kalam or LabCalcPro?
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