Formulas & Shortcuts in Your Pocket. No 40-Hour Courses.
Stuck on a broken formula at work or preparing for a job interview test tomorrow? Your quick-reference cheat sheet right beside your keyboard and 5-minute commute drills to master spreadsheets fast.
Solve This Real-World Problem in 10 Seconds
Experience how intuitive it is. Help Celdi calculate weekly sales using the exact formula.
| # | A (Item) | B (Price) | C (Lookup) |
|---|---|---|---|
| 1 | Americano | $3.50 | β |
| 2 | Espresso | $4.00 | ? |
| 3 | Cappuccino | $4.75 | β |
| 4 | Flat White | $4.50 | β |
Assemble Formulas Piece by Piece
Never confuse parameters or formula delimiters again. Build bulletproof formulas block by block with instant visual feedback.
| # | A (Item) | B (Price) | C (Formula) |
|---|---|---|---|
| 2 | β Espresso | $4.00 | -- |
| 3 | Americano | $3.50 | β |
| 4 | Cappuccino | $4.75 | β |
| 5 | Flat White | $4.50 | β |
Your Secret Cheat Sheet Right Beside Your Keyboard
Keep your phone next to your monitor. When you forget formula arguments or shortcut keys, Celdi gives you the visual solution in 2 seconds without switching tabs or looking suspicious at work.
Instant 2-Second Syntax Lookup
Required and optional parameters clearly highlighted with real business examples ready to paste into your sheet.
Fix #N/A and #REF! Errors
Understand why formulas break in real workbooks and the defensive functions to patch them for good.
Job Interview Test Prep
Bite-sized challenges calibrated directly for corporate Excel screening tests and technical assessments.
Work 10x Faster With Shortcuts
Absolute $A$1 toggling with F4, instant AutoSum, and keyboard filtering on Windows & Mac.
Tap any mood below or click Celdi to see it react in real time:
Defeat The Errors That Paralyze Your Office
A broken formula can ruin an end-of-month financial close. In Gridverse, you learn to track them down and fix them like a senior analyst.
#VALUE! Text Clashing with Math
Happens when arithmetic hits raw text strings. Cleanse your dataset instantly with VALUE().
#REF! Deleted Dependent Columns
Occurs when someone deletes referenced cells. Build resilient models with INDEX/MATCH.
#DIV/0! Impossible Zero Divisions
Tears financial models apart. Protect your reports with defensive IFERROR() shields.
Why Traditional "Video Course" Apps Fail on Mobile
Nobody learns practical spreadsheets by staring at tiny desktop screen recordings on a 6-inch phone. Gridverse is engineered for quick desktop reference and active micro-drills.
Your Secret Desk Sidekick
Keep your phone beside your laptop keyboard: look up any formula syntax or shortcut in 2 seconds while working.
Excel Job Assessment Prep
Simulate the exact Excel technical tests (VLOOKUP, XLOOKUP, IF, Pivot Tables) companies use for hiring.
5-Minute Commute Micro-Drills
Turn subway rides and coffee breaks into lasting spreadsheet fluency without opening a laptop.
Zero Fluff, 100% Active Recall
Type formulas into real responsive cells with instant feedback instead of passively watching lectures.
100+ Formulas Pocket Dictionary
Official syntax, common pitfalls, and copy-paste examples for corporate finance, sales, and operations.
Windows & Mac Keyboard Shortcuts
Master critical keyboard combinations to navigate, filter, and calculate data without reaching for your mouse.
Straight to What Companies Actually Test
No academic filler. We focus solely on the high-leverage skills evaluated in job screening tests for analysts, accountants, and ops managers.
Core Math & Cell Locking ($A$1)
Master absolute references with $ to drag formulas without broken ranges, plus instant summing.
Automated Decisions & Criteria Filters
Automate workbooks that evaluate sales quotas, commission tiers, and error-proofing.
Must-Know Lookups (VLOOKUP / XLOOKUP)
The #1 skill tested in job interviews: cross-reference multiple data tables in seconds.
Data Cleaning & Date Wrangling
Clean dirty raw CSV dumps and ERP exports in a fraction of the time.
Dynamic Arrays & Modern Excel
Extract unique records and build automated spilled arrays with modern 2026 Excel features.
From Real People Using It On The Job
How Gridverse solves workplace panic and unlocks career opportunities.
βI had an Excel assessment test for a financial analyst role. I practiced for 3 days on the subway with the VLOOKUP challenges and landed the job.β
βHaving Gridverse beside my keyboard at work is a lifesaver. I look up formula syntax in 2 seconds without opening suspicious search tabs on company hardware.β
βMy coworkers think I am a spreadsheet wizard because I never touch the mouse. I only spent 5 minutes a day practicing shortcuts with Celdi over coffee.β
Everything You Need to Know
Straight answers on how to use Gridverse as your desktop companion and job preparation tool.
Why use a mobile app if I work on a desktop computer?
That is its superpower: you work in your actual spreadsheet on your desktop monitor, while your phone acts as your "secret cheat sheet" to look up syntax, shortcut keys, and error fixes in 2 seconds without switching windows or searching forums.
Will this help me pass an Excel job interview assessment test?
Yes, 100%. Over 90% of technical corporate Excel tests evaluate VLOOKUP/XLOOKUP, logical functions (IF, COUNTIF), cell anchoring ($A$1), and basic keyboard navigation. Gridverse modules are calibrated directly to pass these screenings.
Is it a long video course or hands-on practice?
Zero boring video lectures. Gridverse is 100% interactive: solve 5-minute bite-sized spreadsheet puzzles, type formulas directly into reactive cells, and get immediate feedback with Celdi.
How does it help me fix #VALUE!, #REF!, and #N/A errors?
The app features a dedicated "Broken Sheets" mode where you diagnose why real-world spreadsheets break and learn the exact defensive formulas to fix them permanently.
Does it work for Google Sheets as well as Microsoft Excel?
Yes. Core formulas (SUM, XLOOKUP, VLOOKUP, IF, FILTER, UNIQUE) behave identically in both tools, and Gridverse explicitly highlights platform-specific shortcuts.
How much time do I need to spend per day?
Just 5 to 10 minutes. It is specifically designed for quick subway rides, coffee breaks, or a 3-minute refresher right before an important presentation or meeting.
Fix Your Formulas in Seconds. Ace Your Next Technical Test.
Download Gridverse for free and always have the ultimate formula and shortcut cheat sheet at hand.
100% Free β’ No tedious sign-up β’ Ready for your workday