Welsh Lessons vs ProblemSum
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Welsh Lessons
Learn essential Welsh phrases for travel or study with this phrasebook. It features 20 themed sections with English and Welsh translations, audio pronunciations, and a practice mode to test your comprehension.
- 20 themed sections
- English and Welsh phrases
- Audio recordings of Welsh pronunciation
- Practice mode for comprehension
- Themed vocabulary lists
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This is a first Welsh phrase book perfect for learning a little Welsh to use on your visit to Wales, or to practice what you are learning between Welsh lessons. It has 20 themed sections on different topics: - greetings - common phrases - numbers - telling the time - days, weeks and months - food and drink - travelling - places - directions - illness - weather - occupations - family - animals - common verbs - adjectives - colours - countryside - the National Anthem - the Lord's Prayer All phrases are shown in English and Welsh with a recording of how the Welsh is said. There is a Practice mode where you are shown the Welsh and given the opportunity to see whether you recognise what it means.
ProblemSum
Practice math word problems aligned with the Singapore Mathematics syllabus for Primary 6 students. Get detailed solutions for each problem. The app works offline and requires no account.
- Random math word problem generation
- Singapore Math syllabus alignment
- Detailed step-by-step solutions
- Offline functionality
- No account required
- Ad-free experience
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ProblemSum — unlimited PSLE problem sums, every one fully worked. PSLE word problems: ratio, fractions, percentage, money, algebra, rate, time, number patterns and more. Not geometry figures, charts or patterns drawn as shapes — those are read off a picture, and this app writes questions. Primary 6 maths practice that never runs out — because there is no question bank to run out of. No account. No subscription. No internet connection. Pay once and it is yours. NOT A QUESTION BANK Most practice apps ship a fixed set of questions. Work through them and you are done; work through them twice and your child is remembering answers instead of solving problems. ProblemSum has no such list. Every question is written when you ask for it, with its own names, numbers and quantities, and the working follows those numbers — so there is no end of the book to reach, and no set of answers to fall back on instead of the method. AND EVERY ONE IS WORKED THROUGH Type your answer, tap Check Answer, and the full solution opens underneath: the bar model drawn out, the units labelled, every line of working, and — on most questions — a check at the end proving the numbers really do add up. Most types also offer a second method, so a child who cannot see the model can follow the working through instead, or the other way round. BAR MODELS, DRAWN PROPERLY The model method is how Singapore classrooms teach these problems, so it is how ProblemSum explains them. Bars are drawn to scale with their units marked, the part that changed hands shaded, and braces showing what is left — drawn for the numbers in front of you. SOLUTIONS SET LIKE A TEXTBOOK Working is laid out the way it would be written on paper: fractions stacked over their denominators, ratios and percentages and money in their proper forms, and units carried through every line. BUILT FOR THE 2026 SYLLABUS Algebra is new to Primary 6, and it is here, with circles, three-term ratio, volume worked backwards, dividing by a fraction and percentage change. So is the earlier content the PSLE still examines: time and the 24-hour clock, factors and multiples, number patterns, area and perimeter, and discount, GST and interest. Rate comes as the charges a paper sets — by the hour, and in bands — and averages change as someone joins or leaves. WHAT IT COVERS, AND WHAT IT DOES NOT Ratio and fractions run deepest, then percentage and money, then volume and capacity, then algebra, average, rate, rate of work and whole numbers, with age, area and perimeter, circles, factors and multiples, mass, measurement, number patterns and time each drilled by their own kind of question. Every one is set at PSLE level. What it does not do: geometry from a figure, charts and graphs, and patterns drawn as shapes. Those are read off a diagram rather than a paragraph, so they sit outside what a word-problem generator can write. The Info tab lists both sides of that line, so you always know what you have. ANSWER IT THE WAY YOU THINK OF IT $4.50 or 4.50. Three-quarters as 3/4 or 0.75. A time as 1.45 p.m. or 1345. A ratio with spaces or without. ProblemSum accepts the formats a Primary 6 child actually writes, so a right answer is never marked wrong for its punctuation. COME BACK TO WHAT YOU HAVE DONE Recent questions stay on the device with their full solutions, ready to open and read through again. ONE APP, EVERY LEARNER Set up a profile for each child. Each one keeps its own score — questions attempted, questions right — so two children can share an iPad without sharing a total. IPHONE, IPAD AND MAC One purchase covers all three. On Mac and iPad with a keyboard, Command-N gives you the next question and Command-Return checks your answer. WORKS ANYWHERE, TELLS NO ONE ProblemSum makes no network connections at all. There is no account to create, no analytics, no advertising and no data collection of any kind — everything is generated on the device and stays there. Built for the Singapore syllabus.
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Verdict
The clearest difference is rating: ProblemSum at 5.0 against Welsh Lessons's 3.0. ProblemSum also leads on review sentiment (100% vs 64%) and update cadence (every 5 weeks vs every 7 months). Welsh Lessons's advantage is price ($1.99 vs $2.99). On ratings volume, 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
Welsh Lessons costs $1.99 and ProblemSum $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
ProblemSum holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews point the same way: 64% of Welsh Lessons's written reviews are positive against 100% of ProblemSum's.
Welsh Lessons ships an update every 7 months, ProblemSum every 5 weeks. The most recent releases landed on September 20, 2026 and September 23, 2026 respectively.
| Parameter | Welsh Lessons | ProblemSum |
|---|---|---|
| Price | $1.99 — better | $2.99 |
| Rating | 3.0 (2 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 64.2% of reviews | 100.0% of reviews — better |
| Number of ratings | 2 — better | 1 |
| Update frequency | Every 7 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, Mac | iPhone, iPad, Mac |
| Requires iOS | 18.5 | 18.0 — better |
| Further details — not scored | ||
| Size | 10 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | AberProgs | Aeterna Solutions |
Customer experience
Welsh Lessons
ProblemSum
In-app purchases
Welsh Lessons
No in-app purchases
ProblemSum
No in-app purchases
Questions
Is Welsh Lessons free?
Is ProblemSum free?
Which has better reviews, Welsh Lessons or ProblemSum?
Do Welsh Lessons or ProblemSum have ads?
Which is updated more often, Welsh Lessons or ProblemSum?
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