TCF, DELF vs Kube Learn
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TCF, DELF
Prepare for French language proficiency tests with comprehensive lessons, interactive activities, and simulated exams. Access grammar, vocabulary, and pronunciation exercises to improve your skills for DELF and TCF certifications.
- Over 400 lessons with dialogues
- 1200+ activities with explanations
- DELF and TCF test simulations
- Educational and cultural videos
- Corrected dictations for phonics
- YouTube channel for extra resources
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As a result of a partnership between Learning Vibes and Digischool, the mobile application superFLE - an "all-in-one" companion - allows you to revise, to dive deep your knowledge on grammar, conjugations and vocabulary and to train efficiently for the FLE tests and certifications (DELF and TCF), doesn’t matter your level (A1, A2, B1 and B2) of the CEFR. The app’s strengths : - more than 400 complete lessons with dialogues to listen to and examples to understand grammar rules, conjugation and learn vocabulary - over 1200 activities with corrections and detailed explanations - training and simulations for the DELF A1, A2, B1, B2 and the TCF - educational videos in addition to the lessons - corrected dictations to work on phonics - cultural videos to understand French-speaker societies and cultures - a YouTube channel superFLE with additional and fun resources Free registration and premium offers on the subscription. Find superFLE on social networks: Facebook, Instagram and LinkedIn. Are you a FLE / FLI teacher or in charge of a training structure (language center, association, school or university, Alliance Française, French Institute...)? Feel free to contact us to try the Premium version of the application and discover our dedicate special offers and preferential prices: super-fle@digischool.fr 3 subscription options are available for the application (weekly, monthly and quarterly). Your subscription will be automatically renewed unless the automatic renewal is canceled at least 24 hours before the end of the current payment period. When the subscription expires, access to all the courses and features in the app will be cut out at the end of the current payment period. Read our terms and conditions : https://www.digischool.fr/informations-utiles/conditions-generales-dutilisation
Kube Learn
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Learn Kubernetes the way SREs do: by fixing what's broken. KubeLearn puts you on call. A pod is crash-looping, a node went NotReady, an alert never fired, and it's your job to find the root cause and fix it. Read realistic kubectl output, type the commands you'd use at work, fix the YAML until the cluster is healthy again, then read the post-mortem. A NEW PAGE EVERY DAY • Today's page: a fresh incident waits for you every day • Keep your streak alive and climb the ranks, from Trainee to Principal SRE 26 REALISTIC INCIDENTS • Type real commands. Aliases like "k get po -A" and "deploy/web" work too • Fix broken manifests and Dockerfiles in a built-in editor • Smart feedback points you in the right direction without giving the answer away • Hints when you're stuck, and the answer after two tries • A post-mortem after every incident: what went wrong and how to prevent it Four tracks, all seen through running Kubernetes in production: • Kubernetes: CrashLoopBackOff, ImagePullBackOff, 503s from the Ingress, volumes stuck in Pending, RBAC errors, bad releases, OOMKilled pods, traffic spikes • Linux: a node NotReady after maintenance, evicted pods everywhere, workers that vanish silently, cluster-wide DNS outages • Docker: an image built on a Mac, one flag that broke everything, "no root" security rules, 502s on every deploy • Grafana & Prometheus: dashboards that say "No data", the alert that never fired, a disk full in 24 hours 25 FOCUSED LESSONS Short lessons with examples and a quiz for each. Answers are shuffled every time, so you learn the material, not the positions. • Kubernetes: Pods, Deployments, Services, ConfigMaps & Secrets, health checks, resources & scheduling, storage, Ingress & DNS, RBAC, a troubleshooting playbook • Linux: processes & signals, namespaces & cgroups, systemd & kubelet, disks & eviction, networking & DNS tools • Docker: images & registries, Dockerfiles for Kubernetes, Docker vs containerd, reproducing problems locally • Grafana: the monitoring stack, PromQL, dashboards & logs, alerting YOUR OWN AI TUTOR, FREE AND PRIVATE On iPhones with Apple Intelligence, ask questions about any lesson, get any section re-explained in simple words, and ask why a quiz answer was right or wrong. It runs entirely on your device: nothing you type ever leaves your phone. GREAT FOR • Developers starting with Kubernetes • DevOps and SRE engineers sharpening their troubleshooting • Preparing for CKA / CKAD exams and on-call interviews PRIVATE AND OFFLINE No account, no ads, no tracking. Everything works offline, and your progress stays on your device. Kubernetes is a registered trademark of The Linux Foundation. KubeLearn is an independent learning app and is not affiliated with or endorsed by The Linux Foundation or the CNCF.
Screenshots
Verdict
The clearest difference is in-app purchases: Kube Learn at none against TCF, DELF's 5. Kube Learn also leads on ads (none vs shown). TCF, DELF's advantage is iOS requirement (16.0 vs 18.0). On price 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. TCF, DELF sells 5 in-app purchases, starting at $4.99 per 7 days. Kube Learn asks for nothing beyond the download.
| Parameter | TCF, DELF | Kube Learn |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (15 ratings) — better | — |
| Positive reviews | 16.7% of reviews | — |
| Number of ratings | 15 — better | — |
| Update frequency | Every 2 months | — |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 69 MB | 3 MB |
| Age rating | 12+ | 4+ |
| Developer | digiSchool | Oleksandr Krasnoshchok |
In-app purchases
TCF, DELF
- FLE - 1 semaine$4.997 Days
- FLE - 1 mois$9.491 Month
- digiSchool Pass - mensuel$12.991 Month
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- FLE - Trimestre$20.493 Months
- digiSchool Pass - annuel$79.991 Year
Kube Learn
No in-app purchases









